q: The inverse ratio of 3: 6: 1 is?
Options:
(A) 2:3:7
(B) 2:3:9
(C) 2:1:6
(D) 2:3:6
(E) 2:3:1
a: Stream of consciousness: 1/3: 1/6: 1/1 = 2:1:6 The answer is (C).

question: A telephone company needs to create a set of 3-digit area codes. The company is entitled to use only digits 6, 4 and 3, which can be repeated. If the product of the digits in the area code must be even, how many different codes can be created?
Options:
(A) 20
(B) 22
(C) 26
(D) 24
(E) 30
answer: Stream of consciousness: Total # of codes possible is 3*3*3 = 27. Oit of those 27 codes only the product of 333 and will be odd, the remaining 26 will have either 2 or 4 in them, which ensures that their product will be even. Therefore the number of codes where the product of the digits is even = (total) - (restriction) = 27 - 1 = 26. The answer is (C).

q: If 10 crates have 94 apples each and how many apples more is required in order to make 100 apples in each crate?
Options:
(A) 5
(B) 10
(C) 15
(D) 20
(E) 60
a: Stream of consciousness: Each crate requires 6 apples and totally there are 10 crates so required apples = 10 * 6 = 60 The answer is (E).

question: A can do a piece of work in 20 days. B in 15 days A and C in 12 days. In how many days can A finish the work if he is assisted by B on one day and C on the next, alternately?
Options:
(A) 2 days
(B) 8 days
(C) 6 days
(D) 8 days
(E) 9 days
answer: Stream of consciousness: A + B = 1/20 + 1/15 = 7/60
A + C = 1/20 + 1/12 = 8/60
7/60 + 8/60 = 15/60 = 1/4
4 days * 2 = 8 days The answer is (B).

q: Find the odd man out
445, 221, 109, 46, 25, 11, 4
Options:
(A) 221
(B) 109
(C) 46
(D) 25
(E) 21
a: Stream of consciousness: 4*2+3 = 11
11*2+3 = 25
25*2+3 = 53
53*2+3 = 109
109*2+3 = 221
221*2+3 = 445 The answer is (C).

q: What is the sum of all the prime numbers greater than 10 but less than 40?
Options:
(A) 190
(B) 189
(C) 180
(D) 199
(E) 1981
a:
Stream of consciousness: Required sum = (11 +13 + 17 + 19 + 23+ 29 + 31 + 37) = 180
Note: 1 is not a prime number The answer is (C).