NUMBER SYSTEM
31. The sum of the four consecutive even numbers is 284. What would be the smallest number?
(a) 72
(b) 74
(c) 68
(d) 66
(e) None of the above
Answer:- (c) 68
32. The sum of the digits of a two-digit number is 14 and the difference between the two digits of the number is 2. What is the product of the two digits of the two-digit number?
(a) 56
(b) 48
(c) 45
(d) Couldn't be determined
(e) None of the above
Answer:- (b) 48
33. What number should be added to 231228 to make it exactly divisible by 33?
(a) 1
(b) 2
(c) 3
(d) 4
(e) None of the above
Answer :- (c) 3
34. Find the sum of first 25 natural numbers.
(a) 432
(b) 315
(c) 325
(d) 335
(e) None of the above
Answer:- (c) 325
35. Find the sum of the squares of first 35 natural numbers.
(a) 14910
(b) 15510
(c) 14510
(d) 16510
(e) None of the above
Answer:- (a) 14910
36. Find the sum of the cubes of first 15 natural numbers.
(a) 15400
(b) 14400
(c) 16800
(d) 13300
(e) None of the above
Answer:- (b) 14400
37. Find the sum of first 37 odd numbers.
(a) 1369
(b) 1295
(c) 1388
(d) 1875
(e) None of the above
Answer:- (a) 1369
38. Find the sum of first 84 even numbers.
(a) 7140
(b) 7540
(c) 6720
(d) 8832
(e) None of the above
Answer:- (a) 7140
39. Sum of first 15 multiples of 8 is
(a) 960
(b) 660
(c) 1200
(d) 1060
(e) None of the above
Answer:- (a) 960
40. The product of four consecutive natural numbers plus one is
(a) a non-square
(b) always sum of two square numbers
(c) a square
(d) None of the above
Answer:- (c) A square
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