q: If C is the temperature in degrees Celsins and F is the temperature in degrees Fahrenheit, then the relationship between temperatures on the two scales is expressed by the equation 9C=5(F-32). The temperature to boil water at sea level altitude and to boil on top of Mt. Everest differed by 15 degrees on the Fahrenheit scale, by how many degrees did the temperature extremes differ on the Celsius scale?
Options:
(A) a) 65/9
(B) b) 7
(C) c) 25
(D) d) 45
(E) e) 81
a: Stream of consciousness: The relationship is 9/5 - 32, so approximately half of difference in Celsius (the -32 part won't be used in this case). Just looking at the answer choices you can pick B which is the only number near half of 15. The other answer choices are too far apart so no need to calculate. The answer is (B).

question: Find a a prime number from the options below.
Options:
(A) 69
(B) 70
(C) 71
(D) 72
(E) 74
answer: Stream of consciousness: Clearly, 71 is a prime number. The answer is (C).

q: Find the value of y from given equation: (12)^3 x 6^4 432 = y?
Options:
(A) 2345
(B) 2790
(C) 3490
(D) 7389
(E) 5184
a: Stream of consciousness: Given Exp. = (12)3 x 64 = (12)3 x 64 = (12)2 x 62 = (72)2 = 5184
432 12 x 62 The answer is (E).

question: 9 basketball players are trying out to be on a newly formed basketball team. Of these players, 5 will be chosen for the team. If 6 of the players are guards and 3 of the players are forwards, how many different teams of 3 guards and 2 forwards can be chosen?
Options:
(A) 23
(B) 30
(C) 42
(D) 60
(E) 126
answer: Stream of consciousness: Out of 6 gaurds we have to select 3 -> selection means we use C -> so 6C3
Out of 3 forwards we have to select 2 -> selection means we use C -> so 3C2
Total ways = 6C3 x 3C2 = 60 The answer is (D).

q: A can do a piece of work in 12 days. When he had worked for 2 days B joins him. If the complete work was finished in 8 days. In how many days B alone can finish the work?
Options:
(A) 18 days
(B) 11 days
(C) 77 days
(D) 188 days
(E) 66 days
a: Stream of consciousness: 8/12 + 6/x = 1
X = 18 days The answer is (A).

q: The number N is 5,3H7, where H represents the ten's digit. If N is divisible by 9, what is the value of H?
Options:
(A) 4
(B) 3
(C) 5
(D) 8
(E) 2
a:
Stream of consciousness: If the number is divisible by 9, it must also be divisible by 3. Only 3 yields such a number. The answer is (B).