question: What is the area of a square with perimeter 2P ?
Options:
(A) 16p^2
(B) 4P
(C) P^2/5
(D) P/16
(E) P^2/4
answer: Stream of consciousness: Each side is p/2
A = (p/2)^2 = (p^2)/4 The answer is (E).
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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).
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question: The edge of a cube is 3a cm. Find its surface?
Options:
(A) 64a2 cm2
(B) 54a2 cm2
(C) 84a2 cm2
(D) 24a2 cm2
(E) 34a2 cm2
answer: Stream of consciousness: 6a2 = 6 * 3a * 3a = 54a2 The answer is (B).
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question: In how many different ways can the letters of the word "CLAIM" be rearrangement?
Options:
(A) 100
(B) 120
(C) 130
(D) 143
(E) 145
answer:
Stream of consciousness: The total number of arrangements is
5P5 = 5! = 120 The answer is (B).
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