Number System A basket contains 5 blue, 4 green and 3 red ball. If three balls are picked at random, what is the probability that at least one is red ? 32/51 37/52 34/55 31/58 32/51 37/52 34/55 31/58 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Probability of having no red ball is9C3 / 12C3 = 21/55Probability of having at least one red ball is 1 - 21/55 = 34/55
Number System What is 50% of 40% of Rs. 3,450? 630 690 670 640 630 690 670 640 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 40% * 3450 = 1380then, 50 % * 1380 = 690
Number System If the product of two successive positive integers is 4692, what is the smaller number ? 70 66 64 68 70 66 64 68 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ∵ 68 x 69 = 4692
Number System 3√103823 = ? 41 44 52 47 41 44 52 47 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 3√103823 = 3√47 x 47 x 47 = 47
Number System The number of prime factors of (6)10×(7)17×(55)27 61 41 91 101 61 41 91 101 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 91
EXAMIANS