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? 8 27 None of these 32 8 27 None of these 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 What is 50% of 40% of Rs. 3,450? 630 640 690 670 630 640 690 670 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 40% * 3450 = 1380then, 50 % * 1380 = 690
Number System What number should replace both the question marks (?) in the following question ? 84 85 83 82 84 85 83 82 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 84
Number System In a pair of fractions, fraction A is twice the fraction B and the product of two fractions is 2/25. What is the value of fraction A? 2/5 Data inadequate 1/25 1/5 2/5 Data inadequate 1/25 1/5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP A = 2B => B = 1/2 A, so, AB = 2/25 1/2 A2 = 2/25A2 = 4/25 A = 2/5
Number System What should come in place of question mark (?)? 8 : 1 1 : : 72: 109 89 99 79 109 89 99 79 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let ? = xTherefore 8 : 11 : 72 : xTherefore x = (11 x 72) / 8 = 99
Number System 93296 - 45874 + 20382 - 56817 = ? 109887 109877 109867 109857 109887 109877 109867 109857 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 113678 - 102691 = 109887
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