Number System When the square of a number is substracted from (68)², the answer so obtained is 2508. What is the number ? 45 47 46 44 45 47 46 44 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (68)² - x² = 2508Therefore, x² = 4624 = 2508Therefore, x = root of 2116 = 46
Number System What is the difference between the local values of 3 in the number 53403? 3030 3003 2997 0 3030 3003 2997 0 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3000 – 3 = 2997
Number System 4/6 of 6/5 of 5/7 of a number is 96. Find the number. 170 162 168 164 170 162 168 164 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x x 4/6 x 6/5 x 5/7 = 96∴ x = 96 x 6 x 5 x 7/4 x 6 x 5 = 168
Number System The difference between 72% of a number and 49% of the same number is 575. What is 9% of that number ? 295 245 275 225 295 245 275 225 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be x.Therefore, 72% of x - 49% of x = 575Therefore, (72 - 49)% of x = 575Therefore, 9% of x = 575/23 x 9 = 225
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 27 24 30 22 27 24 30 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 27
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