Reasoning: 1 to 11 = 11 * 50 = 550
1 to 6 = 6 * 49 = 294
6 to 11 = 6 * 52 = 312
6th = 294 + 312 550 = 56
Ans: (B)
Question: The average of 11 results is 50, if the average of first six results is 49 and that of the last six is 52. Find the sixth result?
Options:
(A) 21
(B) 56
(C) 18
(D) 25
(E) 23
Rationale: Assume total students in the class = 100
Then Girls = 60% (100) = 60
Poor girls = 25% (60) = 15
So probability that a poor girls is selected leader = Poor girls / Total students = 15/100 = 15%
The answer: (B)
Question: In a class there are 60% of girls of which 25% poor. What is the probability that a poor girl is selected is leader?
Options:
(A) 22
(B) 15
(C) 77
(D) 17
(E) 11
Reasoning: 2000 + 300 + 40 + 5 = 2345
Ans: (A)
Question: What is the sum of the local values of the digits 2, 3, 4, 5 in the number 2345?
Options:
(A) 2345
(B) 4500
(C) 5000
(D) 6000
(E) 7000
Rationale: Saving = (42-28)% of 34500 = 4830.
The answer: (C)
Question: If the personal income tax rate is lowered from 42% to 28%, what is the differential savings for a tax payer having an annual income before tax to the tune of $34500?
Options:
(A) $3500
(B) $5000
(C) $4830
(D) $7000
(E) $10000
Reasoning: Use elimination method to find the correct option. you find that of all the options when 4 is the correct value for n
Ans: (E)
Question: Calculate the value of n from the below equation: n^310n+20=44
Options:
(A) 1
(B) 5
(C) 3
(D) 2
(E) 4
Reasoning: 8-(2*0) = 8
8-(2*1) = 6
6-(2*2) = 2
2-(2*3) = -4
Ans: (A)
Question: What is the next number of the following sequence.
8, 8, 6, 2,.... ?
Options:
(A) -4
(B) -5
(C) -6
(D) -7
(E) -8