Number System When (21)² is subtracted from the square of a number the answer obtained is 1584. What is the number ? 45 65 55 35 45 65 55 35 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.According to the question,x² - (21)² = 1584= x² - 441 = 1584 = x² = 1584 + 441 = 2025∴ x = √2025 = 45
Number System Let R = qs—4. When s=8, R=16. When s=10, R is equal to 22 23 20 21 22 23 20 21 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 21
Number System If one-seventh of a number is 55 then 40% of that number = ? 154 147 163 171 154 147 163 171 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be x , Therefore, x/7 = 55Therefore, x = 55 x 7 = 385Therefore, 49% of 385 = 154
Number System A number consists of two digits. If 3/5 of 1/5 of the number is 9. Find the sum of its two digits? 8 60 7 12 8 60 7 12 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x * 3/5 * 1/5 = 9x = 75 => 7 + 5 = 12
Number System 64% of 2650+40% 0f 320=? 1578 1247 2096 1824 1578 1247 2096 1824 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 1824
Number System What is the difference between the largest number and the least number written with the digits 7, 3, 1, 4? 6048 5084 6084 6184 6048 5084 6084 6184 ANSWER DOWNLOAD EXAMIANS APP
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