Number System If the product of two successive positive integers is 4692, what is the smaller number ? 66 68 64 70 66 68 64 70 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ∵ 68 x 69 = 4692
Number System What should come in the place of ' ? ' in the following number series ? 2, 5, 9, 19, 37, ? 78 76 77 75 78 76 77 75 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2 x 2 + 1 = 5;5 x 2 - 1 = 99 x 2 + 1 = 19: 19 x 2 - 1 = 3737 x 2 + 1 = 75
Number System The product of two consecutive position odd numbers is 6723. What is the smaller number? 71 79 74 83 71 79 74 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 If (83)² is subtracted from the square of a number, the answer so obtained is 8487. What is the number ? 179 124 163 146 179 124 163 146 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x Therefore, x² - (83)² = 8487x² = 8487 + (83)²x² = 8487 + 6889x² = 15376Therefore, x² = 15376 x = 124
Number System A number when divided by 221 gives a remainder 43, what remainder will be obtained by dividing the same number 17? 5 9 10 11 5 9 10 11 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 221 + 43 = 264/17 = 9 (Remainder)
Number System Complete the series : 11, 12, 17, 18, 23, 24 ... 14 12 None of these 30 14 12 None of these 30 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP None of these
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