Number System Which number should replace question mark (?) in the following equation ? ?/342 = 38/? 112 116 114 118 112 116 114 118 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (?)² = 342 x 38Therefore, ? = √342 x 38 = √38 x 9 x 38 = 38 x 3 = 114
Number System What value should come in place of ? in the given number series ? 15, 51, 162, 498, 1509, ? 7878 5656 3434 4545 7878 5656 3434 4545 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 15, (15 + 2) x 3 = 51,(51 + 3) x 3 = 162, (162 + 4) x 3 = 498, (498 + 5) x 3 = 1509(1509 + 6) x 3 = 4545
Number System What is the difference between the largest and the smallest number written with 7, 7, 0, 7? 6893 6993 6093 693 6893 6993 6093 693 ANSWER DOWNLOAD EXAMIANS APP
Number System The sum of four consecutive even numbers is 36. Find the sum of the squares of these numbers? 344 296 252 388 344 296 252 388 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.
Number System The sum of two numbers is 165 and the difference between them is 9. What is the average of these two numbers ? 85.5 84.5 82.5 83.5 85.5 84.5 82.5 83.5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + y = 165x - y = 92x = 174 ∴ x = 87 and y = 78∴ x + y/2 = 165/2 = 82.5
Number System Find the least value of 3x + 4y if x2y3 = 6. 6 10 3 7 6 10 3 7 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 10
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