Number System If the fractions8/5,7/2,9/5,5/4,4/5 are arranged in descending order of their values, which one will be fourth? 11/13 7/9 5/4 1/3 11/13 7/9 5/4 1/3 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 5/4
Number System 3√103823 = ? 47 52 44 41 47 52 44 41 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 3√103823 = 3√47 x 47 x 47 = 47
Number System Which is the smallest fractions among the following ? 27/31 15/19 11/13 13/15 27/31 15/19 11/13 13/15 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 11/13 = 0.8461,13/15 = 0.8666,27/31 = 0.87,15/19 = 0.789
Number System A box contains 5 red, 4 black and 4 blue balls. If 3 balls are drawn randomly from the box, what is the probability that there are exactly 2 blue balls in the three drawn balls ? 29/145 28/144 27/143 30/146 29/145 28/144 27/143 30/146 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Total balls = 5 + 4 + 4 = 13∴ n(S) = 13C3 = 2862 blue balls can be selected from 4 balls in 4C2 = 6 ways and the remaining one ball is to be selected from 9 balls in 9C1 = 9 ways ∴ n(E) = 6 x 9∴ P(E) = 6 x 9/286 = 27/143
Number System On multiplying a number by 7, the product is a number each of whose digits is 3. The smallest such number is: 48619 47619 47649 47719 48619 47619 47649 47719 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP By hit and trail, we find that47619 * 7 = 333333.7) 333333 (47619 333333---------------- 0
Number System If 4 2/3 is subtracted form 10 1/2 and the difference is multiplied by 450, then what is the final answer? None of these 2725 2675 2875 None of these 2725 2675 2875 ANSWER DOWNLOAD EXAMIANS APP
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