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 27 24 30 22 27 24 30 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 27
Number System Find the least number with which 16200 should be multiplied, to make it a perfect cube. 36 45 360 48 36 45 360 48 ANSWER DOWNLOAD EXAMIANS APP
Number System Thrice the square of a natural number decreased by 4 times the number is equal to 50 more than the number. The number is: 4 10 5 6 4 10 5 6 ANSWER DOWNLOAD EXAMIANS APP
Number System In a two-digit number, if it is known that its unit's digit exceeds its ten's digit by 2 and that the product of the given number and the sum of its digits is equal to 144, then the number is: 24 46 26 42 24 46 26 42 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the ten's digit be x. Then, unit's digit = x + 2. Number = 10x + (x + 2) = 11x + 2 Sum of digits = x + (x + 2) = 2x + 2 (11x + 2)(2x + 2) = 144 2x2 + 26x - 140 = 0 (x - 2)(11x + 35) = 0 x = 2Hence, required number = 11x + 2 = 24.
Number System Complete the series : 1, 8, 27, 64, 125, 216 ..... 353 343 373 363 353 343 373 363 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 343
Number System What should come in place of question mark (?)? 8 : 1 1 : : 72: 109 89 79 99 109 89 79 99 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let ? = xTherefore 8 : 11 : 72 : xTherefore x = (11 x 72) / 8 = 99
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