Number System In an examination, 68% of the total examinees passed. If the number of failures is 248, the total number of examinees is 750 640 775 725 750 640 775 725 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Failed students are 32% which is 248.∴ Total = 24800/32 = 775
Number System 217 * 217 + 183 * 183 = ? 81268 80578 79698 80698 81268 80578 79698 80698 ANSWER DOWNLOAD EXAMIANS APP
Number System In a two-digit number, the digit in unit's place is two more than three times the digit in ten's place. If the sum of the two digits is 10, what is the number ? 28 18 24 22 28 18 24 22 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be 10x + y.∴ y = 3x + 2 .......(i)And, x + y = 10 ......(ii)From (i) and (ii), x = 2, y = 8∴ Number = 28
Number System The product of two successive numbers is 4556. Which of the following is the larger of the two numbers? 78 67 68 63 78 67 68 63 ANSWER DOWNLOAD EXAMIANS APP
Number System When the square of a number is substracted from (68)², the answer so obtained is 2508. What is the number ? 47 44 45 46 47 44 45 46 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (68)² - x² = 2508Therefore, x² = 4624 = 2508Therefore, x = root of 2116 = 46
Number System The digit in unit's place of a three digit number is thrice the digit in ten's place & the digit in hundred's place is two-third of the digit in ten's place. If the sum of three digits of number is 14 211 221 215 239 211 221 215 239 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the ten's digit be x.∴ Unit's digit = 3xHundered's digit = 2x/3∴ x + 3x + 2x/3 = 14= 3x + 9x + 2x = 14 x 3= 14x = 14 x 3= x = 3∴ Number = 239
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