Number System Two-third of a positive number and 25/216 of its reciprocal are equal. The number is: 12/5 144/25 5/12 25/144 12/5 144/25 5/12 25/144 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,2/3 x = 25/216 * 1/xx2 = 25/216 * 3/2 = 25/144 x = 5/12
Number System The sum of five consecutive numbers is 190. What is the sum of the largest and the smallest number ? 76 73 74 75 76 73 74 75 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + x + 1 + x + 2 + x + 3 + x + 4= 190= 5x + 10 = 190= 5x = 190 - 10 = 180= x = 180/5 = 36The largest number = 36 + 4 = 40∴ Required sum = 36 + 40 = 76
Number System What is the sum of all the numbers between 300 and 1000 which are divisible by 179? 2607 2506 2527 2517 2607 2506 2527 2517 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 358/179 ….. 895/179179(2 + 3 + 4 + 5) => 2506
Number System What is the difference between the largest number and the least number written with the digits 7, 3, 1, 4? 6184 6048 5084 6084 6184 6048 5084 6084 ANSWER DOWNLOAD EXAMIANS APP
Number System How many numbers up to 100 are divisible by 7? 14 100 107 93 14 100 107 93 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 100/7 = 14 2/7 => 14 Numbers
Number System 1089/? = ?/1296 1348 1278 1082 1188 1348 1278 1082 1188 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (?)² = 1089 x 1296(?)²= (11 x 11 x 9) x (12 x 12 x 9)(?)= 11 x 12 x 9= 1188
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