Number System If 35% of a number is 899.5, what is 68% of that number ? 1547.6 1847.6 2247.6 1747.6 1547.6 1847.6 2247.6 1747.6 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Suppose the number is x.Then 35% of x = 899.5∴ 68% of x = 68/35 x 899.5 = 1747.6
Number System 3√103820 x 3√274620 = ? 3055 3045 3035 3065 3055 3045 3035 3065 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3√103820 = 47 and 3√274620 = 65 ∴ ? = 47 x 65 = 3055
Number System What least number shall be added to 4700 to make it a perfect square ? 91 71 81 61 91 71 81 61 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (69)² = 4761 and (68)² = 4624Clerly 4624 < 4700 < 4761So 61 should be added to make 4700 a perfect square.
Number System Supply the missing figure : 2, 6, 12, 20, 30 ... 56 40 42 39 41 40 42 39 41 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 42
Number System If the sum of five consecutive even numbers A, B, C, D and E is 130, what is the product of A and E ? 840 720 780 660 840 720 780 660 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the consecutive even numbers be A = 2x, B = 2x + 2, C = 2x + 4, D = 2x + 6 and E = 2x + 8= A + B + C + D + E = 130= 10x + 20 = 130∴ x = 130 - 20/10 = 11Therefore, product of A and E= 22 x 30 = 660
Number System 16.23 x 12.9 + 17.32 = ? 236.687 246.687 226.687 None of these 236.687 246.687 226.687 None of these ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 16.23 x 12.9 + 17.32= 209.367 + 17.32= 226.687
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