Number System What least number shall be added to 4700 to make it a perfect square ? 81 91 71 61 81 91 71 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 How many figures are required for numbering the pages of a book containing 1000 pages? 6489 3892 2893 2883 6489 3892 2893 2883 ANSWER DOWNLOAD EXAMIANS APP
Number System Find the smallest number which should be multiplied with 520 to make it a perfect square. 55 120 30 None of these 55 120 30 None of these ANSWER DOWNLOAD EXAMIANS APP
Number System Two-third of a positive number and 25/216 of its reciprocal are equal. The number is: 12/5 144/25 25/144 5/12 12/5 144/25 25/144 5/12 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,2/3 x = 25/216 * 1/xx2 = 25/216 * 3/2 = 25/144 x = 5/12
Number System 3√103820 x 3√274620 = ? 3065 3055 3045 3035 3065 3055 3045 3035 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3√103820 = 47 and 3√274620 = 65 ∴ ? = 47 x 65 = 3055
Number System If the difference between a number and its three-fourth is 18, find the number. 68 57 61 72 68 57 61 72 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.According to the question,x - 3x/4 = 18= x/4 = 18= x = 4 x 18 = 72
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