Reasoning: Speed = 63 * 5/18 = 35/2 m/sec
Time taken = 280 * 2/35 = 16 sec
Ans: (B)
Question: A train 280 m long, running with a speed of 63 km/hr will pass a tree in?
Options:
(A) 15 sec
(B) 16 sec
(C) 18 sec
(D) 20 sec
(E) 22 sec
Rationale: 100 * 100 = 10000
125 * 85 = 10625
The answer: (C)
Question: The length of a rectangle is increased by 25% and its breadth is decreased by 15%. What is the effect on its area?
Options:
(A) 1288
(B) 1299
(C) 10625
(D) 10000
(E) 2887
Reasoning: Largest 4 digit number is 9999
After doing 9999 ÷ 88 we get remainder 55
Hence largest 4 digit number exactly divisible by 88 = 9999 - 55 = 9944
Ans: (C)
Question: Find the largest 4 digit number which isexactly divisible by 88?
Options:
(A) 3454
(B) 4586
(C) 9944
(D) 10564
(E) 18664
Rationale: X * (85/100) = 85000
X = 1000 * 100
X = 100000
The answer: (C)
Question: 85% of the population of a city is 85000. The total population of the city is?
Options:
(A) 95000
(B) 97500
(C) 100000
(D) 105000
(E) 102500
Reasoning: A = 7500(26/25)^3 = 8436
Ans: (D)
Question: If Rs.7500 are borrowed at C.I at the rate of 4% per annum, then after 3 years the amount to be paid is?
Options:
(A) 3377
(B) 2688
(C) 2688
(D) 8436
(E) 1268
Reasoning: (x + 1)! = (x + 1) * x!
(x + 1)!/x! = x + 1
Ans: (D)

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Question: Which of the following is equal to (x+1)!/x!?
Options:
(A) x-1
(B) 1+(1/x) 
(C) 1
(D) x+1
(E) x