Number System What is the sum of all the prime numbers from 20 to 40? 117 119 118 120 117 119 118 120 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 23 + 29 + 31 + 37 = 120
Number System 35 + 15 * 1.5 = ? 5.25 75 57.5 51.5 5.25 75 57.5 51.5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Given Exp. = 35 + 15 * 3/2 = 35 + 45/2 = 35 + 22.5 = 57.5
Number System 35%of ?=242 394 487 542 693 394 487 542 693 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 693
Number System 217 * 217 + 183 * 183 = ? 81268 79698 80698 80578 81268 79698 80698 80578 ANSWER DOWNLOAD EXAMIANS APP
Number System What is 432 times 119 ? 50408 53408 51408 52408 50408 53408 51408 52408 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP No. 432 x 119 = 51408
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 30/146 27/143 29/145 28/144 30/146 27/143 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
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