Number System A two-digit number is such that the product of the digits is 8. When 18 is added to the number, then the digits are reversed. The number is: 42 24 18 81 42 24 18 81 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the ten's and unit's digit be x and 8/x respectively. Then, (10x + 8/x) + 18 = 10 * 8/x + x 9x2 + 18x - 72 = 0 x2 + 2x - 8 = 0 (x + 4)(x - 2) = 0 x = 2 So, ten's digit = 2 and unit's digit = 4. Hence, required number = 24.
Number System 1256+4813+765=? 6836 6831 6834 6839 6836 6831 6834 6839 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 1256+4813+765= 6069+765=6834
Number System Pick the wrong number from the given number series. 3,4,10,33,135,685,4116 10 135 33 685 10 135 33 685 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The correct number is 136.3 x 1 + 1 = 44 x 2 + 2 = 1010 x 3 + 3 = 3333 x 4 + 4 = 136136 x 5 + 5 = 685685 x 6 + 6 = 4116
Number System What is 432 times 119 ? 50408 52408 51408 53408 50408 52408 51408 53408 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP No. 432 x 119 = 51408
Number System (800 / 64) * (1296 / 36) = ? 420 500 None of these 460 420 500 None of these 460 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Given Exp.= 800/64 * 1296/36 = 12.5 * 36 = 450
Number System What should come in place of (?) in the following series ? 10, 19, 30, 43, 58, ? 78 75 76 77 78 75 76 77 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The series is: +9, +11, +13, +15, +17
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