Number System If the sum and difference of two numbers are 20 and 8 respectively, then the difference of their square is: 160 28 180 12 160 28 180 12 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be x and y. Then, x + y = 20 and x - y = 8x2 - y2 = (x + y)(x - y) = 20 * 8 = 160.
Number System If one-seventh of a number is 55 then 40% of that number = ? 154 163 147 171 154 163 147 171 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be x , Therefore, x/7 = 55Therefore, x = 55 x 7 = 385Therefore, 49% of 385 = 154
Number System In a division sum, the quotient is 120, the divisor 456 and the remainder 333, find the dividend? 50553 56053 55053 5553 50553 56053 55053 5553 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 120 * 456 + 333 = 55053
Number System 2536+4851—?=3450+313 6784 4567 3624 5243 6784 4567 3624 5243 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3624
Number System The sum of four consecutive even numbers is 36. Find the sum of the squares of these numbers? 296 252 388 344 296 252 388 344 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 If the average of two numbers is 88.5 and one number is 5.5 less than the average. Find out the next number. 91 86 97 94 91 86 97 94 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 94
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