Number System If the difference between a number and its three fifths is 62, what is the number ? 145 175 155 165 145 175 155 165 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x - 3x/5 = 62or x = 62 x 5/2 = 155
Number System 7432 ÷ 32 x ? = 2787 78 41 21 12 78 41 21 12 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 7432/32 x ? = 2787= ? = 2787 x 32/7432 = 12
Number System 3251 + 587 + 369 - ? = 3007 1200 1300 1375 1250 1200 1300 1375 1250 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let 4207 - x = 3007 Then, x = 4207 - 3007 = 1200
Number System If the difference between the squares of two consecutive numbers is 47, what is the smaller number ? 24 25 23 26 24 25 23 26 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be (x + 1) and x.Therefore, (x + 1)² - x² = 47x² + 2x + 1 - x² = 472x + 1 = 47Therefore, x = 46/2 = 23
Number System What is the average of the following set of numbers ? 173, 192, 198, 204, 211, 223, 227 222 234 204 210 222 234 204 210 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Avg = 173 + 192 + 198 + 204 + 211 + 223 + 227/7 = 1428/7 = 204
Number System The sum of four consecutive even numbers is 36. Find the sum of the squares of these numbers? 252 296 344 388 252 296 344 388 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the four numbers be x, x + 2, x + 4 and x + 6.=> x + x + 2 + x + 4 + x + 6 = 36=> 4x + 12 = 36 => x = 6The numbers are 6, 8, 10 and 12.Sum of their squares = 62 + 82 + 102 + 122 = 36 + 64 + 100 + 144 = 344.
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