Number System A certain number when divided by 45 leaves a remainder 31, what is the remainder if the same number be divided by 15? 9 11 13 1 9 11 13 1 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 45 + 31 = 76/15 = 1 (Remainder)
Number System A certain number successively divided by 2, 5 and 7 leaves remainders 1, 2 and 3 respectively. When the same number is divided by 70, what is the remainder? 33 36 34 35 33 36 34 35 ANSWER DOWNLOAD EXAMIANS APP
Number System On multiplying a number by 7, the product is a number each of whose digits is 3. The smallest such number is: 48619 47719 47619 47649 48619 47719 47619 47649 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP By hit and trail, we find that47619 * 7 = 333333.7) 333333 (47619 333333---------------- 0
Number System What least number must be subtracted from 2641 so that the remainder left, when divided by 10,15 and 25, is 7 in each case ? 87 81 84 94 87 81 84 94 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP LCM of 10, 15, 25 = 150When we drive 2641 by 150 the remainder is 91.But the remainder should be 7.So, the number to be subtracted from 2641 is 91 - 7 = 84.
Number System A number when multiplied by five times of itself give the value equal to 1445. What is the number ? 18 15 17 16 18 15 17 16 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x x 5x = 1445= 5x² = 1445= x² = 289∴ x = 17
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