Number System (12)² - (4.4)² - (0.04)² = ? 125.6384 129.6384 124.6384 131.6384 125.6384 129.6384 124.6384 131.6384 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (12)² - (4.4)² - (0.04)²= 144 - 19.36 - 0.0016= 124.64 - 0.0016= 124.6384
Number System When 102 is reduced from a number, the number gets reduced by 88%. What is that number ? 550 650 850 750 550 650 850 750 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 850
Number System An urn contains 9 blue, 7 white and 4 black balls. If 2 balls are drawn at random, then what is the probability that only one ball is white ? 91/190 90/190 89/190 92/190 91/190 90/190 89/190 92/190 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Total possible outcomes = 20C2 = 20 x 19/1 x 2 = 190Total favourable outcomes = 7C1 x 13C1 = 7 x 13 = 91∴ Required probability = 91/190
Number System 3√103823 = ? 44 52 41 47 44 52 41 47 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 3√103823 = 3√47 x 47 x 47 = 47
Number System The sum of two numbers is 165 and the difference between them is 9. What is the average of these two numbers ? 85.5 84.5 82.5 83.5 85.5 84.5 82.5 83.5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + y = 165x - y = 92x = 174 ∴ x = 87 and y = 78∴ x + y/2 = 165/2 = 82.5
Number System Find the least value of 3x + 4y if x2y3 = 6. 7 10 6 3 7 10 6 3 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 10
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