MU-NLPC/Calc-aqua_rat huggingface dataset:
The number of ways in which one or more balls can be selected out of 10 white, 9 green and 7 blue balls is  Pick:
A) 892	B) 881	C) 891	D) 879	E) None of these

Solution: The required number of ways   = (10 + 1)(9 + 1)(7 + 1) - 1 = 879.   Answer 879
Answer: D
A necklace is made by stringing N individual beads together in the repeating pattern green bead, white bead, yellow bead, red bead, and blue bead. If the necklace design begins with a green bead and ends with a yellow bead, then N could equal	Choose the correct choice from the following answers:
A) 55
B) 65
C) 75
D) 68
E) 85

Solution: Recognize that we are going to have to look for an answer thats a multiple of 5, plus 3.   Mutliple of 5 because there are 5 beads in the pattern, and plus 3 because the bead ends on yellow, which is 3 into the pattern.   I just went through all the answer choices, and only E fits. 5x13 = 65, and   65+3= 
  65+3 = 68
68   Answer : 68
Answer: D
the sides of a triangle are in the ratio 3:5:7.if the pereimeter is 60 cms,the longest side is Choose the correct choice from the following options
A) 7 B) 30 C) 28 D) 25 E) 16

Solution: 3x+5x+7x=60   15x=60   x=4   longest side=7*4= 
7*4 = 28
28   ANSWER:28
Answer: C
There are 6 equally spaced points A,B,C,D,E and F marked on a circle with radius R. How many convex pentagons of distinctly different areas can be drawn using these points as vertices? Pick:  A) 6P5  B) 1  C) 5  D) None of these  E) Cannot be determined

Solution: Solution:   Since, all the points are equally spaced; hence the area of all the convex pentagons will be same.   Answer: Option None of these
Answer: D
If in a kindergarten class, there are five children 3 feet 4 inches tall (indicated by notation 3'4"), two children 4'3" tall and thirteen children 2'4" tall, which of the following is the median height of the children?
Choose the correct choice from the following answers:
A) 2'2"	B) 2'4"	C) 3'3"	D) 3'4"	E) 4'3

Solution: Total number of children in class = 20   so median must be between 10th and 11th child when they are arranged in ascending order.   When arranged in ascending order 5th and 6th child will have the height of 3'4"   so required median height = (2'4"+2'4")/2 = 2'4"   Ans:Option 2'4"
Answer: B
Find the ratio between whole surfaces of a sphere and a hemisphere? Choose the correct answer:
A) 4:3 B) 3:4 C) 3:2 D) 5:2 E) 4:6

Solution: 4 Ï€r2 : 3 Ï€r2 => 4:3   4:3NSWER 4:3
Answer: A
At a meeting of the 5 Joint Chiefs of Staff, the Chief of Naval Operations does not want to sit next to the Chief of the National Guard Bureau. How many ways can the 5 Chiefs of Staff be seated around a circular table? Pick: A) 120 B) 480 C) 960 D) 2520 E) 5040

Solution: Bunuel, I'm also a little confused with the number of arrangements of n distinct objects in a circle. Why is it given by (n-1)!. In theveritasanswer they say:answer D (2520), should be the number of ways to arrange all 7 without the seating restriction given. Is this incorrect?2520
Answer: D
How much time will it take for an amount of 600 to yield 81 as interest at 4.5% per annum of simple interest?	Choices
A) 3 years  B) 4 years  C) 6 years  D) 5 years  E) 7 years

Solution: Time = (100 x 81)/(600 x 4.5) years = 3 years.   answer 3 years
Answer: A
In Kaya's teacher's desk there are 9 pink highlighters, 8 yellow highlighters, and 5 blue highlighters. How many highlighters are there in all?  Choose the correct choice:
A) 11
B) 22
C) 77
D) 33
E) 88

Solution: Add the numbers of highlighters.   9 + 8 + 5= 
9 + 8 + 5 = 22
22.   Answer is 22.
Answer: B
A rectangular box measures internally 1.6m long, 1m broad and 60cm deep. The number of cubical box each of edge 20cm that can be packed inside the box is:
Select:
A) 30	B) 60	C) 90	D) 120	E) 140

Solution: Explanation:   Number of blocks =(160x100x60/20x20x20)=120   Answer: 120
Answer: D
Free notebooks were distributed equally among children of a class. The number of notebooks each child got was one-eighth of the number of children. Had the number of children been half, each child would have got 16 notebooks. Total how many notebooks were distributed ?  Pick one.
A) 256  B) 512  C) 432  D) 352  E) 640

Solution: Let total number of children be x.   Then, x *(1/8)x =(x/2)x 16   x = 64.   Number of notebooks =(1/8)x^2 =(1/8)x 64 x 64= 512.   Answer is 512.
Answer: B
A mixture contains alcohol and water in the ratio 4 : 3. If 5 litres of water is added to the mixture, the ratio becomes 4: 5. Find the quantity of alcohol in the given mixture	Pick:
A) 10 litres
B) 20 litres
C) 30 litres
D) 5 litres
E) 14 litres

Solution: Let the quantity of alcohol and water be 4x litres and 3x litres respectively   4x/(3x+5)=4/5 20x=4(3x+5)8x=20 x=2.5   Quantity of alcohol = (4 x 2.5) litres = 10 litres.   10 litresNSWER 10 litres 10 litres
Answer: A
What is the least number should be added to 1056, so the sum of the number is completely divisible by 25? Choose the correct choice from the following options.
A) 19 B) 20 C) 32 D) 41 E) 53

Solution: (1056 / 25) gives remainder 6   19 + 6 = 23, So we need to add 19   19
Answer: A
If a : b = 2 : 3, find the value of (3a + 5b) : (3a – b)	Pick one.
A) 2 : 7	B) 7 : 1	C) 2 : 5	D) 4 : 9	E) None of these

Solution: Explanation:   Given: a/b = 2/3   (3a + 5b) / (3a – b)   = [3(a/b) +5] / [3(a/b) – 1]   = [3(2/3) +5] / [3(2/3) – 1]   = 7/1   ANSWER: 7 : 1
Answer: B
The size of a flat-screen tablet is given as the length of the screen’s diagonal. How many square inches greater is the screen of a square 6-inch flat-screen tablet than a square 5 -inch flat-screen tablet?	Pick:
A) 5.0
B) 6.0
C) 6.8
D) 5.8
E) 5.5

Solution: If we take a square with side length x and draw a diagonal, we get two isosceles right triangles.   If we focus on one such right triangle, we see that the legs have length x.   square 6-inch flat-screen television   The diagonal (hypotenuse) = 6   So, we can apply the Pythagorean Theorem to get x² + x² = 6²   Simplify: 2x² = 6²   Divide both sides by 2 to get: x² = 6²/2   Since the area of the square = x², we can see that the area of this square is 6²/2   square 5-inch flat-screen television   The diagonal (hypotenuse) = 5   So, we can apply the Pythagorean Theorem to get x² + x² = 5²   Simplify: 2x² = 5²   Divide both sides by 2 to get: x² = 5²/2   Since the area of the square = x², we can see that the area of this square is 5²/2   DIFF5.5R5.5NC5.5 IN AR5.5AS =6²/2-5²/2   = (6²- 5²)/2 = (36-25)/2 =11/2= 
11/2 = 11/2 = around 5.5
5.5   5.5
Answer: E
A train passes a man standing on the platform. If the train is 160 meters long and its speed is 72 kmph, how much time it took in doing so?  Pick:	A) 6 Â½ sec	B) 6 Â½ sec	C) 9 Â½ sec	D) 8 sec	E) 7 Â½ sec

Solution: 8 sec   8 sec   8 sec = 160   S = 72 * 5/18= 
72 * 5/18 = 20
20 mps   T= 160/20= 
160/20 = 8
8 sec
Answer: D
Sarah invested $38,700 in an account that paid 6.2% annual interest, compounding monthly. She left the money in this account, collecting interest for three full years. Approximately how much interest did she earn in the last month of this period?  Options:  A) $239.47  B) $714.73  C) $2793.80  D) $7,888.83  E) $15,529.61

Solution: 1% of 38700 is 387   6% is approximately 2400   At the end of first year, total amount = 38700+2400 = 41000 (approx)   At the end of second year, total amount = 41000+2400 (6% of 41000 works out to approximately the same) = 43400 (approx)   So total earnings for third year cannot be more than 6% of 43400 i.e at max $3000   So monthly earning has to be in the range of 250.   $239.47nswer is $239.47
Answer: A
There is a 35 cm line marked at each centimeter and an insect is placed at every centimeter. 9 frogs are trained to jump a constant distance. The first one jumps 2 cm in every leap, the second one jumps 3 cm and so on until the 9th one jumps 10 cm in every leap and they eat any insect that is available at that spot. If all of them start from start line and finish the entire 35 cm, how many insects were still left after the race was over?	Options
A) 0
B) 4
C) 6
D) 7
E) 10

Solution: Only the prime numbers greater than 10 and less than 35 were left.   That is 11, 13, 17, 19, 23, 29, and 31.   The total is 7.   The answer is 7.
Answer: D
If 4 gallons of gasoline are added to a tank that is already filled to 3/4 of its capacity, the tank is then filled to 9/10 of its capacity. How many gallons does the tank hold? Choices.
A) 20	B) 24	C) 36	D) 40	E) 60

Solution: Let the Capacity of the tank=C   (3/4)C + 4= (9/10)C   =>(9/10)C - (3/4)C = 4   =>(3/20)C = 4   =>C = (4*20)/3 = 26.66   Number of gallons of gasoline that the tank currently holds = 3/4*C +4 = 19.99+4= 
19.99+4 = 23.99
23.99=24   Answer 24
Answer: B
A man has Rs. 800 in the denominations of one-rupee notes, five-rupee notes and ten-rupee notes. The number of notes of each denomination is equal. What is the total number of notes that he has ? Choices
A) 370 B) 380 C) 220 D) 900 E) 150

Solution: Let number of notes of each denomination be x.   Then, x + 5x + 10x = 800 16x = 800 x = 50.   Hence, total number of notes = 3x = 150.   Answer:150
Answer: E
Find the area of circle whose radius is 7m?  Choose the correct choice from the following
A) 121 sq m	B) 184 sq m	C) 174 sq m	D) 124 sq m	E) 154 sq m

Solution: the area of circle =pie* r^2   =22/7 * 7 * 7= 
22/7 * 7 * 7 = 154
154 sq m   ANSW154 sq mR:154 sq m
Answer: E
A man sold two similar houses each for Rs. 1,00,000 one at a gain of 20% and another at a loss of 20%. What is net gain or loss? Choose the correct choice from the following options.
A) 4% B) 6% C) 5% D) 3% E) 2%

Solution: Explanation :   Solution: Here always net loss of (20/100)^2 % = 4%.   4%nswer : 4%
Answer: A
A started a business with an investment of Rs. 70000 and after 6 months B joined him investing Rs. 120000. If the profit at the end of a year is Rs. 65000, then the share of B is?  Choose the correct choice from the following answers:  A) A)30000  B) B)34000  C) C)34098  D) D)33007  E) E)44098

Solution: Ratio of investments of A and B is (70000 * 12) : (120000 * 6) = 7 : 6   Total profit = Rs. 65000   Share of B = 6/13 (65000)   = Rs. 30000   30000nswer:30000
Answer: A
If 9 spiders make 9 webs in 9 days, then how many days are needed for 1 spider to make 1 web?
Select the correct option:	A) 5 days	B) 7 days	C) 8 days	D) 9 days	E) 6 days

Solution: Let, 1 spider make 1 web in a days.   More spiders, Less days (Indirect proportion)   More webs, more days (Direct proportion)   Hence we can write as   (spiders)9:1   }::a:9   (webs)1:9   ⇒7×1×7=1×7×a   ⇒a=7   ANSWER:7 days
Answer: B
A train crosses a platform of 120 m in 15 sec, same train crosses another platform of length 180 m in 18 sec. then find the length of the train?	Select:
A) 145	B) 180	C) 181	D) 184	E) 150

Solution: Length of the train be ‘X’   X + 120/15 = X + 180/18   6X + 720 = 5X + 900   X = 180m   Answer: Option 180
Answer: B
A group of 4 students bought movie tickets in one row next to each other. If Bob and Lia are in this group, what is the probability that Bob and Lia will each sit next to only one of the three other students from the group?  Choose one.
A) 5.67% B) 16.67% C) 15.57% D) 20.25% E) 25.75%

Solution: The question basically asks about the probability that Bob and Lisa sit at the ends.   The total # of sitting arrangements is 4!.   Desired arrangement is either BYZL or LYZB. Now, YZ can be arranged in 2! ways, therefore total # of favorable arrangements is 2*2!.   P=(favorable)/(total)=(2*2!)/4!=1/6.   Answer: 16.67%.(2*2 )/4= 
(2*2 )/4 = 1
1/6.   Answer: 16.67%.
Answer: B
X and Y start a business with Rs.3000 and Rs.6000 respectively. Hoe should they share their profits at the end of one year?  Choose the correct choice from the following answers:	A) 3:1	B) 2:1	C) 1:2	D) 1:3	E) 1:4

Solution: Explanation:   They should share the profits in the ratio of their investments.   The ratio of the investments made by X and Y =   3000 : 6000 => 1:2   Answer:1:2
Answer: C
During 2001, a stock lost 80 percent of its value. During the following year, the stock's value increased by 300 percent. Which of the following is the percent change in the stock's value during those two years?	Select
A) 60 percent decrease B) 20 percent decrease C) 20 percent increase D) 60 percent increase E) 140 percent increase

Solution: Let the value of the stock in 2000 be 100, then in 2001 its value would be 100*(1-80/100)=100*0.2= 
100*0.2 = 20
20 and in 2002 its value would be   20*(1+300/100)= 
  20*(1+300/100) = 80
80. Hence during those two years the value of the stock decreased from 100 to 80, so by 20%.   Answer: 20 percent decrease.
Answer: B
Solution Y is 30 percent liquid X and 70 percent water. If 2 kilograms of water evaporate from 6 kilograms of solution Y and 2 kilograms of solution Y are added to the remaining 4 kilograms of liquid, what percent of this new solution is liquid X?	Select
A) 33%
B) 35 1/2%
C) 37%
D) 40%
E) 42%

Solution: In 8 kilograms of solution Y there are   0.3*6= 
  0.3*6 = 1.8
1.8 kilograms of solution X;   After 2 kilograms of water are replaced by 2 kilograms of solution Y, to the existing 1.8 kilograms of solution X, 0.3*2=0.6 kilograms of solution X are added, so in the new solution of 6 kilograms there are 1.8+0.6= 
1.8+0.6 = 2.4
2.4 kilograms of solution X, which is  2.4/6*100= 
 2.4/6*100 = 40
40% of this new solution.   Answer: 40%.
Answer: D
The cost to park a car in a certain parking garage is $10.00 for up to 2 hours of parking and $1.75 for each hour in excess of 2 hours. What is the average (arithmetic mean) cost per hour to park a car in the parking garage for 9 hours?  Choices.
A) $1.09
B) $1.67
C) $2.225
D) $2.47
E) $2.50

Solution: Total cost of parking for 10 hours = 10$ for the first 2 hours and then 1.75 for (9-2) hours = 10+7*1.75= 
10+7*1.75 = 22.25
22.25   Thus the AVERAGE parking price= 22.25/9 = 2.47 $   $2.47 is the correct answer.
Answer: D
A work which could be finished in 9 days was finished 3 days earlier after 10 more men joined. The number of men employed was?
Choose the correct choice from the following answers.
A) 18 B) 20 C) 22 D) 24 E) 26

Solution: Explanation:   x ------- 9   (x + 10) ---- 6   x * 9 = (x + 10)6   x = 20   Answer: 20
Answer: B
Baseball's World Series matches 2 teams against each other in a best-of-seven series. The first team to win four games wins the series and no subsequent games are played. If you have no special information about either of the teams, what is the probability u that the World Series will consist of fewer than 7 games?
Select the correct option:
A) 12.5% B) 25% C) 31.25% D) 68.75% E) 75%

Solution: In order to determine the probability u that the World Series will last less than 7 games, we can first determine the probability that the World Series WILL last exactly 7 games and then subtract this value from 1.   In order for the World Series to last exactly 7 games, the first 6 games of the series must results in 3 wins and 3 losses for each team.   Let's analyze one way this could happen for Team 1:   Game 1 Game 2 Game 3 Game 4 Game 5 Game 6   T1 Wins T1 Wins T1 Wins T1 Loses T1 Loses T1 Loses   There are many other ways this could happen for Team 1. Using the permutation formula, there are 6!/(3!)(3!) = 20 ways for Team 1 to win 3 games and lose 3 games in the first 6 games.   Logically, there are also 20 ways for Team 2 to win 3 games and lose 3 games in the first 6 games.   Thus, there are a total of 40 ways for the World Series to last the full 7 games.   The probability that any one of these 40 ways occurs can be calculated from the fact that the probability of a team winning a game equals the probability of a team losing a game = 1/2.   Given that 7 distinct events must happen in any 7 game series, and that each of these events has a probability of 1/2, the probability that any one particular 7 game series occurs is.   Since there are 40 possible different 7 game series, the probability that the World Series will last exactly 7 games is:   Thus the probability that the World Series will last less than 7 games is 100% - 31.25% = 68.75%.   The correct answer is 68.75%. 100  - 31.25= 
 100  - 31.25 = 68.75
68.75%.   The correct answer is 68.75%.
Answer: D
Three 6 faced dice are thrown together. The probability that all the three show the same number on them is
Choose the most appropriate option:
A) 1/38	B) 1/36	C) 1/37	D) 1/39	E) 1/32

Solution: It all 3 numbers have to be same basically we want triplets. 111, 222, 333, 444, 555 and 666. Those are six in number. Further the three dice can fall in 6 * 6 * 6= 
6 * 6 * 6 = 216
216 ways.   Hence the probability is 6/216= 1/36   Answer: 1/36
Answer: B
Two trains, each 100 m long, moving in opposite directions, cross other in 6 sec. If one is moving twice as fast the other, then the speed of the faster train is? Select the correct option:	A) 80 km/hr	B) 66 km/hr	C) 60 km/hr	D) 67 km/hr	E) 22 km/hr

Solution: Let the speed of the slower train be x m/sec.   Then, speed of the train = 2x m/sec.   Relative speed = ( x + 2x) = 3x m/sec.   (100 + 100)/6 = 3x => x = 100/9   So, speed of the faster train = 200/9 = 200/9 * 18/5= 
200/9 * 18/5 = 80
80 km/hr.   80 km/hrnswer:80 km/hr
Answer: A
Rs.1500 is divided into two parts such that if one part is invested at 6% and the other at 5% the whole annual interest from both the sum is Rs.83. How much was lent at 5%?
Choose one:
A) 299 B) 566 C) 678 D) 700 E) 8277

Solution: (x*5*1)/100 + [(1500 - x)*6*1]/100 = 83   5x/100 + 90 – 6x/100 = 83   x/100 = 7   => x =700   Answer:700
Answer: D
The quantities S and T are positive and are related by the equation S=K/T, where k is a constant. If the value of S increases by 30 percent, then the value of T decreases by what percent? Choose the most appropriate option
A) 25%  B) 33 ¹/₃%  C) 50%  D) 66 ²/₃%  E) 20%

Solution: We can assign numbers:   lets say S = 2, K = 6 (constant) and T = 3 (so that S=K/T)   Now increasing S by 30% gives S=5, K remains constant, so T = 2 (6/2=3)   decrease in T= 1, percent decrease in T = (1/5)*100= 
(1/5)*100 = 20
20%   Answer 20%
Answer: E
In a camp, there is a meal for 90 men or 180 children. If 150 children have taken the meal, how many men will be catered to with the remaining meal ? Answers.
A) 16  B) 20  C) 13  D) 15  E) 17

Solution: Explanation :   There is a meal for 180 children. 150 children have taken the meal.   Remaining meal is to be catered to 30 children.   Now, 180 children = 90 men   So, 30 Children = (90/180) * 30= 
(90/180) * 30 = 15
15 men   Answer : 15
Answer: D
If x, y, and z are negative integers and 3x - 3y = -3z, then which of the following statements must be true?
I.	x = z
II.	x > y > z
III. x > y	Choose the correct choice from the following options:
A) I and II	B) I only	C) II only	D) III only	E) None

Solution: 3x-3y=-3z   x-y=-z   Since z<0; -z>0   x-y>0   x>y   III correct.   We can't say much about z though;   x=-5; y=-100; z=-95   II and I incorrect.   Ans:III only
Answer: D
An aeroplane covers a certain distance of 420 Kmph in 6 hours. to cover the same distance in 4 2/3 hours, it Must travel at a speed of Choose the correct choice from the following answers
A) 440 B) 540 C) 640 D) 740 E) 250

Solution: Speed of aeroplane = 420 Kmph   Distance travelled in 6 hours   = 420 * 6= 
420 * 6 = 2_520
2520 Km   Speed of aeroplane to acver 2520 Km in 14/3= 2520*3/14= 
2520*3/14 = 540
540 Km   Answer 540.
Answer: B
A sum of Rs. 1190 has been divided among A, B and C such that A gets of what B gets and B gets of what C gets. B’s share is:	Choose the correct answer:	A) Rs. 120	B) Rs. 210	C) Rs. 240	D) Rs. 300	E) None

Solution: EXPLANATION   Let C’s share = Rs. x   Then, B’s share = Rs. x/4 , A’s share = Rs. (2/3 x x/4 ) = Rs. x/6   =x/6 + x/4 + x = 1190   => 17x/12 = 1190   => 1190 x 12/ 17 = Rs.840   Hence, B’s share = Rs. (840/4) = Rs. 210.   Answer Rs. 210
Answer: B
John bought 9.25m of cloth for $397.75. Find the cost price per metre.
Pick.
A) 46  B) 47  C) 58  D) 56  E) 43

Solution: Cloth bought by John = 9.25 m   Cost of 9.25 m = $397.75   Cost per metre = 397.75 ÷ 9.25   The cost of the cloth per metre = $ 43   Answers: 43
Answer: E
Initially, the boys and girls in a classroom were in the ratio of 2:3. Then, 4 boys entered the room and 3 girls left the room. Then, the number of girls tripled. Now there are 24 boys in the room. How many girls are currently in the room?	Choose the correct choice from the following options:
A) 12
B) 40
C) 15
D) 34
E) 81

Solution: Working backwards: 24 boys - 4 boys = 20 boys in the room initially.   From ratio boys:girls = 2:3 = 1:3/2 we have:   girls in the room initially = (3/2)(20) = 30.   From this we work forward: (3)(30 girls - 3 girls) = 81 girls in the room.   Answer: 81
Answer: E
If six persons sit in a row, then the probability that three particular persons are always together is
Pick one.
A) 1/20	B) 3/10	C) 1/5	D) 4/5	E) 2/5

Solution: Six persons can be arranged in a row in 6! ways. Treat the three persons to sit together as one unit then there four persons and they can be arranged in 4! ways. Again three persons can be arranged among them selves in 3! ways. Favourable outcomes = 3!4! Required probability = 3!4!/6! = 1/5   ANSWER:1/5
Answer: C
The average weight of 10 boys increases by 3.5 kg when a new boy comes in place of one of them weighing 50 kg. What might be the weight of the new boy?
Choose the correct answer
A) 85 kg	B) 80 kg	C) 75 kg	D) 72 kg	E) 65 kg

Solution: Total weight increased = 10 x 3.5 kg = 35 kg.   Weight of new person = 50 + 35= 
50 + 35 = 85
85 kg   85 kgnswer : 85 kg
Answer: A
Ashly and Vinnie work on a sales staff with 8 other salespeople. If five members of the staff will be chosen at random to attend a sales workshop, what is the probability that both Ashly and Vinnie will be chosen? Choose the correct answer.
A) 1/10  B) 3/28  C) 2/9  D) 1/4  E) 1/2

Solution: I did slightly different and hence obviously ended up with the answer 2/9.   I assumed that because Ashly and Winni have to be chosen, the remaining selection is 3 people from 8.   8C3/10C5= 2/9. Option 2/9.
Answer: C
If f(x) = 2*(x^4 - 1)/(x^2), what is f(1/x) in terms of f(x)?  Choices:
A) f(x)
B) -2f(x)
C) 1/f(x)
D) -1/f(x)
E) 2*f(x)

Solution: f(1/x) = ((1/x)^4 - 1) / ((1/x)^2)   = ((1/x^4) - 1) / (1/x^2)   = ((1-x^4)/(x^4)) / (1/x^2)   = (1-x^4)/(x^2)   = - 2( (x^4) -1) / (x^2)   = -2*f(x)   Answer is -2f(x).
Answer: B
If x > 0, x/10 + x/25 is what percent of x? Select the correct option
A) 6%  B) 14%  C) 37 1/2%  D) 60%  E) 75 %

Solution: Just plug and chug. Since the question asks for percents, pick 100. (but any number will do.)   100/10 + 100/25= 10+4= 
10+4 = 14
14   14 is 14% of 100=14%
Answer: B
I came across this problem in the GMATprep software and got it totally wrong!
A company consists of 6 senior and 4 junior staff officers. If a committee is created with 2 senior and 1 junior staff officers, how many possible committees are there? Choose the most appropriate option
A) 12	B) 44	C) 56	D) 60	E) 200

Solution: 6C2*4C1   =60 = 60
Answer: D
The present worth of Rs. 2310 due 2 years hence, the rate of interest being 15% per annum, is:
Choose the correct choice from the following options.
A) 1689
B) 1680
C) 1682
D) 1681
E) 1686

Solution: P.W. = Rs. 100 x 2310 = Rs. 1680.   100 + 15 x	5   2   Answer: 1680
Answer: B
What is the minimum value of z for which z^2 + z - 3/10 > 0 is not true?  Choose the correct choice from the following:  A) -5/2  B) -3/5  C) -1/5  D) 1/4  E) 1/5

Solution: I think -3/5 -3/5 is the best ans...
Answer: B
If k is an integer and 0.0010101 x 10^k is greater than 100, what is the least possible value of k? Choose the correct answer.
A) 2 B) 3 C) 4 D) 5 E) 6

Solution: 0.0010101 * 10^k > 100   We need to move the decimal point to the right 5 places to get 101.01   This is equivalent to multiplying by 10^5.   The answer is 5.
Answer: D
A fraction becomes 4 when 1 is added to both the numerator and denominator, and it becomes 7 when 1 is subtracted from both the numerator and denominator. The numerator of the given fraction is : Pick one.
A) 2
B) 3
C) 7
D) 15
E) 17

Solution: Explanation:   Let the required fraction be a/b   Then a+1/b+1=4⇒a−4b=3   and a−1/b−1=7⇒a−7b=−6   Solving these equations we get,   a=15   b=3   Correct Option: 15
Answer: D