Number System 217 * 217 + 183 * 183 = ? 81268 80698 80578 79698 81268 80698 80578 79698 ANSWER DOWNLOAD EXAMIANS APP
Number System The sum and the product of two numbers are 25 and 144 respectively, the difference of the number is? 5 11 3 7 5 11 3 7 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + y = 25xy = 144(x- y)2 = (x + y)2 – 4xy(x- y)2 = 625 – 576 => (x – y) = 7
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? 39 69 49 59 39 69 49 59 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 39
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 30 24 27 22 30 24 27 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 27
Number System A number exceeds by 25 from its 3/8 part. Then the number is? 32 40 35 39 32 40 35 39 ANSWER DOWNLOAD EXAMIANS APP
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 25.84 27.84 21.84 24.84 25.84 27.84 21.84 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
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