Number System If the difference between a number and two-fifths of that number is 45 what is the number ? 77 76 78 75 77 76 78 75 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x ∴ x - 2x/5 = 45∴ x = 75
Number System 486+32×25—59=? 596 582 567 528 596 582 567 528 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 528
Number System On dividing number by 5, we get 3 as remainder. What will be the remainder when the square of this number is divided by 5? 4 2 0 1 4 2 0 1 ANSWER DOWNLOAD EXAMIANS APP
Number System The sum of three consecutive numbers is 87. The greatest among these three number is: 28 26 29 30 28 26 29 30 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be x, x + 1 and x + 2 Then,x + (x + 1) + (x + 2) = 873x = 84x = 28Greatest number, (x + 2) = 30.
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: 81 42 24 18 81 42 24 18 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 2/11 of 3/7 of 8/13 of 12012 = ? 449 321 576 241 449 321 576 241 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 2 x 3 x 8 x 12012/11 x 7 x 13 = 576
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