Number System The difference between the two digit number and the number obtained by interchanging its digits is 54. The difference between the digits is? 4 6 Nothing can be said. 1 4 6 Nothing can be said. 1 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (10x + y) – (10y + x) = 54x – y = 6
Number System The difference between 45% of a number and 18% of the same number is 145.8. What is 30% of that number ? 245 162 188 141 245 162 188 141 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.45% of x - 18% of x = 145.8∴ x/100 (45 - 18) = 145.8∴ x = 145.8 x 100/27 = 540∴ 30% of 540 = 540 x 30/100 = 162
Number System 432+2170+35=? 729 494 678 523 729 494 678 523 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 494
Number System What should come in the place of question mark (?) in the number series given below? 160 159 157 158 160 159 157 158 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 160
Number System If three eighth of a number is 141. What will be the approximately value of 32.08% of this number? 60 90 120 160 60 90 120 160 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x * 3/8 = 141 => x= 376376 * 32.08/100 = 120
Number System The difference between two integers is 5. Their product is 500. Find the numbers. 20, 25 21, 26 15, 20 30, 25 20, 25 21, 26 15, 20 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.
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