Number System Find the greatest number which leaves the same remainder when it divides 25, 57 and 105. 16 8 12 18 16 8 12 18 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 105 - 57 = 4857 - 25 = 32105 - 25 = 80The H.C.F of 32, 48 and 80 is 16.
Number System When 102 is reduced from a number, the number gets reduced by 88%. What is that number ? 650 750 550 850 650 750 550 850 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 850
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? 1/5 Data inadequate 1/25 2/5 1/5 Data inadequate 1/25 2/5 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 Find the number of factors of 300 excluding 1 and itself. 16 15 14 18 16 15 14 18 ANSWER DOWNLOAD EXAMIANS APP
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 ? 80/152 80/151 80/153 80/150 80/152 80/151 80/153 80/150 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 Which choice provides the answer in the following : If 2 * 3 = 36, 5 * 4 = 400, 6 * 2 = 144, 3 * 3 = 81; then, 5 * 5 = ? 425 625 525 325 425 625 525 325 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 625
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