Number System If (182)² is added to the square of a number, the answer so obtained is 47765. What is the number ? 111 131 121 101 111 131 121 101 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be xTherefore x² + (182)² = 47765Therefore x² = 47765 - (182)2 = 47765 - 33124Therefore x² = 14641, Therefore x = 121
Number System The product of two consecutive odd numbers is 4095 What is the greater number ? 61 74 65 69 61 74 65 69 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the two consecutive odd numbers be 2x - 1 and 2x + 1.(2x - 1) (2x - 1) = 4095= 4x² - 1 = 4095= 4x² = 4096= x² = 1024∴ x = 32∴ The numbers are 63 and 65.Greater number = 65
Number System The sum of a number and its reciprocal is one-eighth of 34. What is the product of the number and its square root? 8 32 27 None of these 8 32 27 None of these ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,x + 1/x = 34/8 8x2 - 34x + 8 = 0 4x2 - 17x + 4 = 0 (4x - 1)(x - 4) = 0 x = 4required number = 4 * √4 = 4 * 2 = 8.
Number System Ratio between two numbers is 3: 4 and their sum is 420. Find the smaller number? 160 180 240 140 160 180 240 140 ANSWER DOWNLOAD EXAMIANS APP
Number System 96% of a number is 19584. What is 56% of that number ? 11324 11524 11424 11224 11324 11524 11424 11224 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.According to the question.96% of x = 19584= x = 1958 x 100/96 = 20400∴ 56% of 20400= 20400 x 56/100= 11424
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
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