Number System A shopkeeper purchased 200 bulbs for Rs. 10 each. However, 5 bulbs were fused and had to be thrown away. The remaining were sold at Rs. 12 each. What will be percentage profit? 33 14 17 21 33 14 17 21 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 12
Number System What number should replace both the question marks (?) in the following question ? 82 85 83 84 82 85 83 84 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 84
Number System Which number should replace question mark (?) in the following equation ? ?/342 = 38/? 118 116 112 114 118 116 112 114 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (?)² = 342 x 38Therefore, ? = √342 x 38 = √38 x 9 x 38 = 38 x 3 = 114
Number System 3√103820 x 3√274620 = ? 3055 3045 3035 3065 3055 3045 3035 3065 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3√103820 = 47 and 3√274620 = 65 ∴ ? = 47 x 65 = 3055
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 ? 89/190 90/190 91/190 92/190 89/190 90/190 91/190 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 Difference between two numbers is 5, six times of the smaller lacks by 6 from the four times of the greater. Find the numbers? 10, 5 12, 9 11, 6 12, 7 10, 5 12, 9 11, 6 12, 7 ANSWER DOWNLOAD EXAMIANS APP
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