Number System What is the sum of 1 + 2 + 3+ ... + 27 ? 343 378 382 396 343 378 382 396 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Sum = 27 x (27 + 1)/2= 27 x 28/2= 27 x 14= 378
Number System 35 + 15 * 1.5 = ? 51.5 5.25 75 57.5 51.5 5.25 75 57.5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Given Exp. = 35 + 15 * 3/2 = 35 + 45/2 = 35 + 22.5 = 57.5
Number System The sum of three consecutive multiples of 3 is 72. What is the largest number? 24 36 21 27 24 36 21 27 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be 3x, 3x + 3 and 3x + 6.Then,3x + (3x + 3) + (3x + 6) = 729x = 63x = 7Largest number = 3x + 6 = 27.
Number System If the product of two successive positive integers is 4692, what is the smaller number ? 64 70 66 68 64 70 66 68 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ∵ 68 x 69 = 4692
Number System The sum of the digits of a two digit number is 12. If the new number formed by reversing the digits is greater than the original number by 54, then what will be the original number? 69 59 39 49 69 59 39 49 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 39
Number System 7589 - ? = 3434 11023 4155 1123 4242 11023 4155 1123 4242 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let 7589 - x = 3434Then x = 7589 - 3434 = 4155
EXAMIANS