Number System Find the least number with which 16200 should be multiplied, to make it a perfect cube. 45 360 36 48 45 360 36 48 ANSWER DOWNLOAD EXAMIANS APP
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 ? 90/190 89/190 91/190 92/190 90/190 89/190 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 The difference between 68% of a number and 35% of the same number is 1216. What is 28% of the number ? 1043.75 1037.75 1031.75 1027.75 1043.75 1037.75 1031.75 1027.75 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be xTherefore 68x / 100 - 35x / 100 = 1216 Therefore x = 1216 x 100 / 33Therefore 28% of x = 28x / 100 = 1216 x 100 / 33 x 28 / 100= 1216 x 100 x 28 / 33 x 1/100 = 1031.75
Number System What should come in place of the question mark (?) in the following number series ? 888 888 444 148 ? 7.4 37 29 33 35 37 29 33 35 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 888 ÷ 1 = 888888 ÷ 2 = 444444 ÷ 3 = 148148 ÷ 4 = 3737 ÷ 5 = 7.4
Number System A bag contains eighteen 25-paise coins, seventeen 50-paise coins, twentytwo one-rupee coins, nine 2-rupee coins and three 5-rupee coins. What is the total amount in the bag (Ans in rupees) ? Rs. 68 Rs. 74 Rs. 79 Rs. 62 Rs. 68 Rs. 74 Rs. 79 Rs. 62 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Total = 18/7 + 17/2 + 22 + 9 x 2 + 3 x 5 = 4.5 + 8.5 + 22 + 18 + 15 = Rs 68
Number System 1827÷ 36 x ?=162.4 1.9 3.2 2.6 4.3 1.9 3.2 2.6 4.3 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3.2
EXAMIANS