Number System If the product of two successive positive integers is 4692, what is the smaller number ? 64 70 66 68 64 70 66 68 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ∵ 68 x 69 = 4692
Number System A basket contains eight white and ten black balls. Two draws of one ball each are made without replacement. What is the probability that one ball is white and the other ball is black ? 80/151 80/150 80/153 80/152 80/151 80/150 80/153 80/152 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Two balls can be drawn from 18 balls in 18C2 Ways, ie 153 ways. One white from 8 white balls can be drawn in 8C1 = 8 ways and one black ball from 10 black can be drawn in 10C1 = 10 ways.∴ n(S) = 153, n(E) = 8 x 10 = 80∴ P(E) = 80/153
Number System Simplify the 121 * 175 + 363 * 275 316600 328100 None of these 363000 316600 328100 None of these 363000 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 121 * 175 + 363 * 275 => 121 * 175 + 121 * 3 * 275121 * 175 + 121 * 825= 121 * (175 + 825) = 121000
Number System 64% of 2650+40% 0f 320=? 1247 1578 2096 1824 1247 1578 2096 1824 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 1824
Number System Supply the missing figure : 2, 6, 12, 20, 30 ... 56 41 40 42 39 41 40 42 39 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 42
Number System What should come in place of question mark (?) in the following number series ? 7, 176, 480, 1058, 2188, 4426, ? 8881 8884 8888 8882 8881 8884 8888 8882 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Series is (No. + 9²) x 2, (+8²) x 2, (+7²) x 2, (+6²) x 2.......
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