question: If the average (arithmetic mean) of the four numbers K, 2K + 3, 3K 5 and 5K + 1 is 41, what is the value of K?
Options:
(A) 41
(B) 15 3/4
(C) 22
(D) 23
(E) 25 3/10
answer: Stream of consciousness: K + 2K +3 + 3K - 5 + 5K +1 = 11K -1
(11K -1)/4 = 41
11K = 41 * 4 +1 = 164 +1 = 165
K = 165 / 11 = 15. The answer is (A).

q: Every year an amount increases by 1/8th of itself. How much will it be after two years if its present value is Rs.64000?
Options:
(A) Rs.81000
(B) Rs.80000
(C) Rs.75000
(D) Rs.64000
(E) Rs.68000
a: Stream of consciousness: 64000* 9/8 * 9/8 = 81000 The answer is (A).

question: a, b, c, and d are positive integers where a is divisible by b and c is divisible by d. Which of the following is NOT necessarily an integer?
Options:
(A) (ac) /(bd)
(B) a/b + c/d
(C) (a + c) /(b + d)
(D) (abc) /d
(E) (acd) /b
answer: Stream of consciousness: As per the question, let a = 10, b = 5, c = 6, and d = 2. Plugging these into the answer choices, only C does not yield an integer. The answer is (C).

q: In how many ways can a group of 5 men and 2 women be made out of a total of 7 men and 3 women?
Options:
(A) 63
(B) 25
(C) 40
(D) 65
(E) 98
a: Stream of consciousness: Required number of ways = (7C5 x 3C2) = (7C2 x 3C1) = = 63. The answer is (A).

question: A money lender lends Rs.2000 for six months at 20% p.a. rate. It the interest is reckoned quarterly than find the amount given after time limit?
Options:
(A) 2205
(B) 8786
(C) 8275
(D) 2872
(E) 2282
answer: Stream of consciousness: A = 2000(21/20)2 = 2205 The answer is (A).

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) 34%
(B) 54%
(C) 57%
(D) 78%
(E) 87%
answer:
Stream of consciousness: Total number of votes polled = (1136 + 7636 + 11628) = 20400
So, Required percentage = 11628/20400 * 100 = 57% The answer is (C).