Reasoning: Average of the first 'n' natural numbers = (n + 1)/2
We get (41 + 1)/2 = 21
Ans: (E)
Question: Find the average of the first 41 natural numbers?
Options:
(A) 8
(B) 9
(C) 10
(D) 11
(E) 21
Rationale: 220 + 43 = 263/17 = 8 (Remainder)
The answer: (B)
Question: A no.when divided by 220 gives a remainder 43, what remainder will beobtained by dividingthe same no.17?
Options:
(A) 2
(B) 8
(C) 9
(D) 11
(E) 15
Reasoning: Money paid in cash = Rs. 1000
Balance payment = (10000 - 1000) = Rs. 9000
Ans: (A)
Question: The price of a T.V. set worth Rs. 10000 is to be paid in 20 installments of Rs. 1000 each. If the rate of interest be 6% per annum, and the first installment be paid at the time of purchase, then the value of the last installment covering the interest as well will be?
Options:
(A) 9000
(B) 26699
(C) 96000
(D) 19000
(E) 26711
Rationale: 20000(11/10)4 - 20000(6/5)2 = 482
The answer: (A)
Question: How much more would Rs.20000 fetch, after two years, if it is put at 20% p.a. compound interest payable half yearly than if is put at 20% p.a. compound interest payable yearly?
Options:
(A) 482
(B) 442
(C) 552
(D) 662
(E) 526
Reasoning: A. 13 (can be weighed by keeping weights of 10, 2 and 4 )
B. 15 (cannot be weighed)
C. 17 (can be weighed by keeping weights of 10 and 7 kg)
D. 19(can be weighed by keeping weights of 10, 2 and 7 kg)
E. 21 (can be weighed by keeping weights of 10, 7 and 4 kg)
Ans: (B)
Question: Which of the following CANNOT be weighed using a balance scale and these unit weights: 2, 4, 7, and 10
Options:
(A) 16
(B) 15
(C) 18
(D) 19
(E) 21
Reasoning: S = (150 + 240)/42 = 390/42 * 18/5 = 33
Ans: (B)
Question: A train 150 meters long completely crosses a 240 meters long bridge in 42 seconds. What is the speed of the train is?
Options:
(A) 32
(B) 33
(C) 88
(D) 66
(E) 09