Number System 2536+4851—?=3450+313 5243 3624 6784 4567 5243 3624 6784 4567 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3624
Number System The product of two consecutive position odd numbers is 6723. What is the smaller number? 74 71 79 83 74 71 79 83 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP n x (n + 2) = 6723= n² + 2n - 6723 = 0= n² + 83n - 81n - 6723 = 0= n(n + 83) - 81 (n + 83) = 0Therefore, (n - 81) (n + 83) = 0Therefore, n = 81, n + 2 = 83
Number System {(742)² ÷ 36} ÷ 2 = ? 421.5 422.5 420.5 423.5 421.5 422.5 420.5 423.5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = (174 x 174/36) ÷ 2 = 841/2 = 420.5
Number System In a pair of fractions, fraction A is twice the fraction B and the product of two fractions is 2/25. What is the value of fraction A? 2/5 Data inadequate 1/25 1/5 2/5 Data inadequate 1/25 1/5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP A = 2B => B = 1/2 A, so, AB = 2/25 1/2 A2 = 2/25A2 = 4/25 A = 2/5
Number System 93296 - 45874 + 20382 - 56817 = ? 109857 109877 109887 109867 109857 109877 109887 109867 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 113678 - 102691 = 109887
Number System The sum of four consecutive even numbers is 36. Find the sum of the squares of these numbers? 252 344 296 388 252 344 296 388 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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