Answer: (C)
Question: Look at this series: 53, 53, 48, 48, 43, 43, ... What number should come next?
Options:
(A) A) 12
(B) B) 14
(C) C) 38
(D) D) 53
(E) E) 86
[CoT]: [In this series, each number is repeated, then 5 is subtracted to arrive at the next number.]

Answer: (A)
Question: There are 8 books in a shelf that consist of 2 paperback books and 6 hardback books. If 3 books are selected at random without replacement, how many different combinations are there that at least one paperback book is selected?
Options:
(A) 36
(B) 45
(C) 50
(D) 55
(E) 60
[CoT]: [8C3 [Select any four] - 6C3 [Select all hard backs] = 36.]

Answer: (E)
Question: Seven men can complete a work in 12 days. They started the work and after 5 days, two men left. In how many days will the work be completed by the remaining men?
Options:
(A) 5 days
(B) 6 days
(C) 9 days
(D) 10 days
(E) None of these
[CoT]: [7 x 12 men complete the work in 1 day
Therefore, 1 man's 1 day's work = 1/84
7 men's 5 days work = 5/12
Remaining work = 1- 5/12 = 7/12
5 men's 1 day's work = 5/84
5/84 work is don by them in 1 day
7/12 work is done by them in ((84/5) x (7/12)) = 49/5 days = 9 4/5 days]

Answer: (A)
Question:
People standing in a straight line are wearing alternating colored shirts. The pattern of shirts begins with red, followed by green, blue, white and yellow. This pattern continues (red, green, blue, white and yellow) until it ends with a blue shirt. If there are more than 5 people in line, which of the following cannot be the number of people in the line?
Options:
(A) 27
(B) 38
(C) 53
(D) 63
(E) 78
[CoT]: [The correct answer should not take the form: 5x + 3. Hence, it is]