q: Find the wrong number below mentioned series
17, 600,6000,550,750
Options:
(A) 600
(B) 6000
(C) 17
(D) 550
(E) 750
a: Stream of consciousness: 17 is the only prime number or odd number in the series. The answer is (C).

question: If rupee one produces rupees nine over a period of 54 years, find the rate of simple interest?
Options:
(A) 22 1/7 %
(B) 22 3/2 %
(C) 22 1/8 %
(D) 22 1/2 %
(E) 16 2/3 %
answer: Stream of consciousness: 9 = (1*54*R)/100
R = 16 2/3 % The answer is (E).

q: It is the New Year and Mandy has made a resolution to lose weight this year. She plans to exercise and do yoga. For exercise she plans to workout at the gym and ride her bicycle in the ratio of 2:3 everyday. She will also do yoga in the ratio, yoga:exercise = 2:3. If she rides her bike for 12 minutes, how much time will she spend doing yoga? (rounded to minutes)
Options:
(A) 10 min.
(B) 41 min.
(C) 17 min.
(D) 23 min.
(E) 20 min.
a: Stream of consciousness: The ratio is 2:3 = gym:ride, so (12)(3/2) = 18 minutes at the gym, and 18 + 12 = 30 minutes exercise, so (2/3)(30) = 20 minutes yoga. The answer is (E).

question: A can do a job in 45 days and B can do it in 30 days. A and B working together will finish four times the amount of work in ------- days?
Options:
(A) 30days
(B) 45 days
(C) 80 days
(D) 72 1/2 days
(E) 72 days
answer: Stream of consciousness: 1/45+ 1/30 = 5/90 = 1/18
18/1 = 18*4 = 72 days The answer is (E).

q: What is the are of an equilateral triangle of side 20 cm?
Options:
(A) 645
(B) 649
(C) 644
(D) 643
(E) 1003
a: Stream of consciousness: Area of an equilateral triangle = 3/4 S2
If S = 20, Area of triangle = 3/4 * 20 * 20 = 1003 cm2; The answer is (E).

q: 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) 7 days
(B) 8 days
(C) 3 days
(D) 9 days
(E) 2 days
a:
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).