Number System (800 / 64) * (1296 / 36) = ? 460 500 420 None of these 460 500 420 None of these ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Given Exp.= 800/64 * 1296/36 = 12.5 * 36 = 450
Number System Complete the series : 81, 69, 58, 48, 39 ........ 29 28 30 31 29 28 30 31 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 31
Number System What number should replace both the question marks (?) in the following question ? 83 84 82 85 83 84 82 85 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 84
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: 24 18 42 81 24 18 42 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 The difference between two integers is 5. Their product is 500. Find the numbers. 15, 20 20, 25 21, 26 30, 25 15, 20 20, 25 21, 26 30, 25 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the integers be x and (x + 5). Then, x(x + 5) = 500 x2 + 5x - 500 = 0 (x + 25)(x - 20) = 0 x = 20So, the numbers are 20 and 25.
Number System Which is the largest fraction among the following ? 21/23 24/25 21/22 12/13 21/23 24/25 21/22 12/13 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 21/23 = 0.913,12/13 = 0.92323/25 = 0.92, 21/22 = 0.9545, 24/25 = 0.96
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