Reasoning: You have 40 multiples of 5, 8 of 25 and 1 of 125. This will give 49 zeros.
Ans: (C)
Question: How many terminating zeroes Q does 200! have?
Options:
(A) 40
(B) 48
(C) 49
(D) 55
(E) 64
Rationale: 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 C (960), should be the number of ways to arrange all 7 without the seating restriction given. Is this incorrect?
The answer: (C)
Question: At a meeting of the 3 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 3 Chiefs of Staff be seated around a circular table?
Options:
(A) 120
(B) 480
(C) 960
(D) 2520
(E) 5040
Reasoning: 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 A which is the only number near half of 35. The other answer choices are too far apart so no need to calculate.
Ans: (A)
Question: 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 required to boil liquid A and liquid B differed by 35 degrees on the Fahrenheit scale, by how many degrees did the temperature extremes differ on the Celsius scale?
Options:
(A) a) 17
(B) b) 13
(C) c) 25
(D) d) 45
(E) e) 81
Rationale: (60/100) * 50 (40/100) * 30
30 - 12 = 18
The answer: (A)
Question: How much 60% of 50 is greater than 40% of 30?
Options:
(A) 18
(B) 27
(C) 26
(D) 29
(E) 21
Reasoning: 2nd day he earns = 2 = 2(2 1)
3rd day he earns = 2(3 1)
On 20th day he earns 2(20 -1) = 219 rupees
Ans: (A)
Question: An enterprising businessman earns an income of Re 1 on the first day of his business. On every subsequent day, he earns an income which is just double of that made on the previous day. On the 20th day of business, he earns an income of:
Options:
(A) Rs 219
(B) Rs 220
(C) Rs 20
(D) Rs 20
(E) Rs 30
Reasoning: A = 2000(21/20)2 = 2205
Ans: (A)
Question: A money lender lends Rs.2000 for six months at 20% p.a. rate. It the interest is reckoned quarterly than find the amount given after time limit.
Options:
(A) 2205
(B) 3387
(C) 2882
(D) 2997
(E) 1278