q: Find the average of the series : 312, 162, 132, 147 and 122?
Options:
(A) 170
(B) 175
(C) 180
(D) 185
(E) 195
a: Stream of consciousness: Average = (312 + 162 + 132 + 147+ 122)/5 = 875/5 = 175 The answer is (B).

question: 3 candidates in an election and received 1136, 7636 and 11628 votes respectively. What % of the total votes did the winningcandidate got in that election?
Options:
(A) 45%
(B) 56%
(C) 57%
(D) 70%
(E) 72%
answer: Stream of consciousness: Total number of votes polled = (1136 + 7636 + 11628) = 20400
So, Required percentage = 11628/20400 * 100 = 57% The answer is (C).

q: If a and b are unique prime integers, which of the following must be odd?
Options:
(A) ab
(B) 2a+2b
(C) 2a2b
(D) 2a / 2b
(E) ab^2
a: Stream of consciousness: Any number multiplied by 2 has to be an even number. hence The answer is (A).

question: In each series, look for the degree and direction of change between the numbers. In other words, do the numbers increase or decrease, and by how much?
Look at this series: 95, 10, 75, 20, 55, ... What number should come next?
Options:
(A) 35
(B) 40
(C) 30
(D) 25
(E) 90
answer: Stream of consciousness: C
30
This is an alternating addition and subtraction series. In the first pattern, 20 is subtracted from each number to arrive at the next. In the second, 10 is added to each number to arrive at the next. The answer is (C).

q: A man buys two articles for Rs.1980 each and he gains 10% on the first and loses 10% on the next. Find his total gain or loss percent?
Options:
(A) 15
(B) 67
(C) 18
(D) 19
(E) 12
a: Stream of consciousness: 90 * 10/60 = 15 kmph The answer is (A).

q: The average age of a class of 32 students is 16 yrs. if the teacher's age is also included, the average increases by one year. Find the age of the teacher
Options:
(A) 49 Years
(B) 51 Years
(C) 53 Years
(D) 54 Years
(E) 55 Years
a:
Stream of consciousness: Total age of students is 32X16 = 512 Years
Total age inclusive of teacher = 33X (16+1) = 561
So, Teacher's age is 561-512 = 49 Yrs
There is a shortcut for these type of problems
Teacher's age is 16+(33X1) = 49 Years The answer is (A).