question: Walking across campus, a student interviewed a group of students. 25% of the students took a finance class last semester, 52% took a marketing class last semester, and 40% took neither a finance nor a marketing class last semester. What percent of the students in the group took both a finance and a marketing class?
Options:
(A) 60%
(B) 50%
(C) 25%
(D) 17%
(E) 10%
answer: Stream of consciousness: {Total} = {finance} + {marketing} - {both} + {neither}
100 = 25 + 52 - {both} + 40
{both} = 17%. The answer is (D).


q: Four of the five parts numbered as (a), (b), (c), (d) and (e)in the following equations are exactly equal. You have to find out the part that is not equal to the other parts. The number of that part is the answer.
Options:
(A) a2 + 5ab + 6b2
(B) (a + 3b) (a + 2b) 
(C) a(a + 3b)  + 2b(a + 3b) 
(D) (3a + b) (a + 2b) 
(E) a(a + 2b)  + 3b(a + 2b) 
a: Stream of consciousness: The other parts are equal to a2 + 5ab + 6b2. The answer is (D).


question: The price of a T.V. set worth Rs. 40000 is to be paid in 20 installments of Rs. 2500 each. If the rate of interest be 6% per annum, and the first installment be paid at the time of purchase, then the value of the last installment covering the interest as well will be?
Options:
(A) 29997
(B) 28088
(C) 27098
(D) 37500
(E) 2799
answer: Stream of consciousness: Money paid in cash = Rs. 2500
Balance payment = (40000- 2500) = Rs. 37500. The answer is (D).


q: The edges of cuboid are 4 cm; 5 cm and 6 cm. Find its surface area?
Options:
(A) 228
(B) 148
(C) 992
(D) 772
(E) 222
a: Stream of consciousness: 2(4*5 + 5*6 + 4*6) = 148 The answer is (B).


question: The speed of a train is 90 kmph. What is the distance covered by it in 12 minutes?
Options:
(A) 15
(B) 18
(C) 77
(D) 52
(E) 42
answer: Stream of consciousness: 90 * 12/60 = 18 kmph The answer is (B).


question: An analyst will recommend a combination of 2 industrial stocks, 2 transportation stocks, and 2 utility stocks. If the analyst can choose from 5 industrial stocks, 4 transportation stocks, and 3 utility stocks, how many different combinations of 6 stocks are possible?
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Options:
(A) 12
(B) 19
(C) 60
(D) 160
(E) 180
answer:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Stream of consciousness: 5C2 * 4C2 * 3C2 = 10*6*3 = 180. The answer is (E).