Number System Subtracting 30 from a number, the remainder is one fourth of the number. Find the number? 22 1/2 30 40 45 22 1/2 30 40 45 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3/4 x = 30 => x = 40
Number System If (35)² is added to the square of a number the answer so obtained is 1394. What is the number ? 15 13 11 17 15 13 11 17 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x Therefore, x² + (35)² = 1394Therefore, x² = 1394 - (35)² = 1394 - 1225 = 169Therefore, x = √169 = 13
Number System 68375 + 72848 - ? = 34346 + 49569 58308 59308 None of these 57308 58308 59308 None of these 57308 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 68375 + 72848 - 34346 - 49569 = 141223 - 83915 = 57308
Number System On multiplying a number by 7, the product is a number each of whose digits is 3. The smallest such number is: 47719 47619 48619 47649 47719 47619 48619 47649 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP By hit and trail, we find that47619 * 7 = 333333.7) 333333 (47619 333333---------------- 0
Number System Find the greatest number which leaves the same remainder when it divides 25, 57 and 105. 8 16 18 12 8 16 18 12 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 105 - 57 = 4857 - 25 = 32105 - 25 = 80The H.C.F of 32, 48 and 80 is 16.
Number System Given √2 = 1.414, the value of √8 + 2√32 - 3√128 + 4√50 is 8.484 8.684 8.784 8.584 8.484 8.684 8.784 8.584 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 8.484
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