Number System A certain number of two digits is three times the sum of its digits. If 45 be added to it, the digits are reversed. The number is: 22 24 30 27 22 24 30 27 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 27
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 None of these 27 32 8 None of these 27 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? 640 670 690 630 640 670 690 630 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 40% * 3450 = 1380then, 50 % * 1380 = 690
Number System What is the remainder when 263251 is divided by 9? 1 6 8 3 1 6 8 3 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP If the sum of the digits of a number is divisible by 9, the number will be divisible by 9.2 + 6 + 3 + 2 + 5 + 1 = 19The nearest multiple of 9 is 18.19 - 18 = 1.
Number System A number when, 28 subtracted from it reduces to its one third. What is the value of 50% of that number? 84 42 24 21 84 42 24 21 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2/3 x = 28 => x = 4242 * 1/2 = 21
Number System 124, 235, 447, 760, 1174, ? 1389 1689 1589 1489 1389 1689 1589 1489 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP +111, +212, +313, +414
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