q: At a meeting of the 6 Joint Chiefs of Staff, the Chief of Naval Operations does not want to sit next to the Chief of the National Guard Bureau. How many ways can the 6 Chiefs of Staff be seated around a circular table?
Options:
(A) 120
(B) 480
(C) 4040
(D) 2520
(E) 5040
a: Stream of consciousness: Bunuel, I'm also a little confused with the number of arrangements of n distinct objects in a circle. Why is it given by (n-1)!. In theveritasanswer they say:answer E (4040), should be the number of ways to arrange all 6 without the seating restriction given. Is this incorrect? The answer is (C).

question: How much is 80% of 45 is greater than 4/5 of 25?
Options:
(A) 15
(B) 57
(C) 16
(D) 16
(E) 73
answer: Stream of consciousness: (80/100) * 45 (4/5) * 25
36 - 20 = 16 The answer is (C).

q: A pharmaceutical company received $3 million in royalties on the first $30 million in sales of and then $9 million in royalties on the next $120 million in sales. By approximately what percentage did the ratio of royalties to sales decrease from the first $30 million in sales to the next $120 million in sales?
Options:
(A) 8%
(B) 15%
(C) 25%
(D) 52%
(E) 56%
a: Stream of consciousness: (9/120)/(3/30) = 3/4 = 75% it means that 9/120 represents only 75%. Therefore a decrease of 25%. The answer is (C).

question: Anitha had 80 currency notes in all, some of which are of Rs 95 denomination and the remaining of Rs 45 denomination. The total amount of all these currency notes was Rs. 4000. How much amount (in Rs) did she have in the denomination of Rs 45?
Options:
(A) 3500
(B) 72
(C) 2000
(D) 3000
(E) 4000
answer: Stream of consciousness: Let the number of 45-rupee notes = x
Then, the number of 95-rupee notes = (80 x)
45x + 95(80 x) = 4000 or x + 2(80 x) = 95 or x = 72. The answer is (B).

q: Look at this series: 80, 10, 70, 15, 60, ... What number should come next?
Options:
(A) 20
(B) 23
(C) 25
(D) 30
(E) 35
a: Stream of consciousness: This is an alternating addition and subtraction series. In the first pattern, 10 is subtracted from each number to arrive at the next. In the second, 5 is added to each number to arrive at the next. The answer is (A).

q: A train 200 meters long completely crosses a 300 meters long bridge in 45 seconds. What is the speed of the train is?
Options:
(A) 10
(B) 20
(C) 30
(D) 40
(E) 50
a:
Stream of consciousness: S = (200 + 300)/45 = 500/45 * 18/5 = 40 The answer is (D).