question: From among the 38 students in a class, one leader and one class representative are to be appointed. In how many ways can this be done?
Options:
(A) 1360
(B) 1260
(C) 1060
(D) 1160
(E) 1406
answer: Stream of consciousness: There are 38 students and every one has equal chance of being selected as a leader. Hence, the leader can be appointed in 38 ways. When one person is appointed as leader, we are left with 35 students. Out of these 37 teachers, we can select one class representative. So, a class representative can be selected in 37 ways. Hence, the number of ways in which a leader and class representative can be selected = 38 x 37 = 1406 The answer is (E).

q: What approximate value should come in place of the question mark (?) in the following equation'?
3 35 of 157.85 + 39% of 1847 = ? 447.30
Options:
(A) 1200
(B) 1500
(C) 1600
(D) 1800
(E) 2100
a: Stream of consciousness: ? 185 160 + 401000 1850 + 450
576 + 740 + 450 1760 1800 The answer is (D).

question: Rs.800 amounts to Rs.920 in 3 years at simple interest. If the interest is increased by 3%, it would amount to how much?
Options:
(A) 226
(B) Rs.992
(C) 665
(D) 771
(E) 211
answer: Stream of consciousness: (800*3*3)/ 100 = 72
920 + 72 = 992 The answer is (B).

q: What is the probability that Company E's advertisement will be one of the first two be shown during the first commercial break?
Options:
(A) 1/ 225
(B) 1 / 30
(C) 1 /15
(D) 2 / 15
(E) 4 /15
a: Stream of consciousness: E 1/15 + (14/15) * 1/14 = 2/15 The answer is (D).

question: The radius of a cylinder is 2 r units and height is 3 r units. Find the curved surface?
Options:
(A) 27
(B) 16
(C) 12
(D) 18
(E) 11
answer: Stream of consciousness: 2 * * 2r * 3r = 12 r2 The answer is (C).

question: People standing in a straight line are wearing alternating colored shirts. The pattern of shirts begins with red, followed by green, blue, and yellow. This pattern continues (red, green, blue, and yellow) until it ends with a green shirt. If there are more than 4 people in line, which of the following cannot be the number of people in the line?
Options:
(A) 18
(B) 22
(C) 42
(D) 41
(E) 74
answer:
Stream of consciousness: The correct answer should not take the form: 4x + 2. Hence, it is The answer is (D).