Number System Four-fifth of a number is 10 more than two-third of the same number. What is the number? 35 91 75 89 35 91 75 89 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 75
Number System 450% of a number is 4725. What is 82% of that number ? 861 871 851 841 861 871 851 841 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x x 450/100 = 4725= x = 4725 x 100/450 = 1050∴ 82% of 1050 = 1050 x 82/100= 861
Number System The difference between 8% of a number and 3% of the same number is 39. What is 2.8% of that number ? 24.84 21.84 27.84 25.84 24.84 21.84 27.84 25.84 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x(8 - 3)% = 39x = 3900/5 = 780∴ 2.8% of 780= 780 x 2.8/100 = 21.84
Number System If (47)² is added to the square of a number the answer thus obtained is 2290. What is the number ? 8 10 7 9 8 10 7 9 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be x Therefore, x² + (47)² = 2290Therefore, x² = 2290 - 2209 = 81Therefore, x = 9
Number System What is the least number, which is perfect square but contains 2700 as its factor? 10800 1800 5400 2700 10800 1800 5400 2700 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 900 * 3 * 3 = 8100
Number System A number consists of two digits. If the digits interchange places and the new number is added to the original number, then the resulting number will be divisible by: 11 9 3 5 11 9 3 5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the ten's digit be x and unit's digit be y. Then, number 10x + y.Number obtained by interchanging the digits = 10y + x.(10x + y) + (10y + x) = 11(x + y)which is divisible by 11.
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