Number System 93296 - 45874 + 20382 - 56817 = ? 109867 109877 109857 109887 109867 109877 109857 109887 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 113678 - 102691 = 109887
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 48619 47619 47649 47719 48619 47619 47649 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP By hit and trail, we find that47619 * 7 = 333333.7) 333333 (47619 333333---------------- 0
Number System The sum of a number and its reciprocal is one-eighth of 34. What is the product of the number and its square root? None of these 27 8 32 None of these 27 8 32 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,x + 1/x = 34/8 8x2 - 34x + 8 = 0 4x2 - 17x + 4 = 0 (4x - 1)(x - 4) = 0 x = 4required number = 4 * √4 = 4 * 2 = 8.
Number System Find the least number with which 16200 should be multiplied, to make it a perfect cube. 36 45 48 360 36 45 48 360 ANSWER DOWNLOAD EXAMIANS APP
Number System What should come in place of question mark (?)? 8 : 1 1 : : 72: 79 109 99 89 79 109 99 89 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let ? = xTherefore 8 : 11 : 72 : xTherefore x = (11 x 72) / 8 = 99
Number System 3√103820 x 3√274620 = ? 3055 3065 3035 3045 3055 3065 3035 3045 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3√103820 = 47 and 3√274620 = 65 ∴ ? = 47 x 65 = 3055