q: If x is an odd integer, which of the following is an odd integer?
Options:
(A) 2x
(B) 3x-1
(C) 5x+6
(D) x+x^2
(E) 6x-6
a: Stream of consciousness: Plug in an odd integer; in this case 3
(2*3) = 6 Even
(3*3)-1 = 8 Even
(5*3)+6 = 15 + 6 = 21 Odd
3+3^2 = 3 + 9 = 12 Even
(6*3)-6 = 18 - 6 = 12 Even The answer is (C).

question: A man purchased 3 blankets @ Rs.100 each, 5 blankets @ Rs.150 each and two blankets at a certain rate which is now slipped off from his memory. But he remembers that the average price of the blankets was Rs.160. Find the unknown rate of two blankets?
Options:
(A) 420
(B) 550
(C) 490
(D) 450
(E) 457
answer: Stream of consciousness: 10 * 160 = 1600
3 * 100 + 5 * 150 = 1050
1600 1050 = 550 The answer is (B).

q: The average age of a class of 14 students is 10 yrs. if the teacher's age is also included, the average increases by one year. Find the age of the teacher
Options:
(A) 30 Years
(B) 31 Years
(C) 32 Years
(D) 34 Years
(E) 25 Years
a: Stream of consciousness: Total age of students is 14X10 = 140 Years
Total age inclusive of teacher = 15X (10+1) = 165
So, Teacher's age is 165-140 = 25 Yrs
There is a shortcut for these type of problems
Teacher's age is 10+(15X1) = 25 Years The answer is (E).

question: Jade has 4 flavors of ice cream in his parlor. How many options are there for James to pick a one-flavor, two-flavor, three-flavor or four-flavor order?
Options:
(A) 15
(B) 13
(C) 14
(D) 17
(E) 18
answer: Stream of consciousness: 4C1 + 4C2+ 4C3+4C4 = 15. The answer is (A).

q: John makes $50 a week from his job. He earns a raise andnow makes $75 a week. What is the % increase?
Options:
(A) 15%
(B) 16.66%
(C) 50%
(D) 19%
(E) 21%
a: Stream of consciousness: Increase = (25/50)*100 = (1/2)*100 = 50%. The answer is (C).

q: A train 360 m long is running at a speed of 45 km/hr. In what time will it pass a bridge 140 m long?
Options:
(A) 40
(B) 28
(C) 26
(D) 27
(E) 21
a:
Stream of consciousness: Speed = 45 * 5/18 = 25/2 m/sec
Total distance covered = 360 + 140 = 500 m
Required time = 500 * 2/25 = 40 sec The answer is (A).