Number System Find the least number with which 16200 should be multiplied, to make it a perfect cube. 48 36 360 45 48 36 360 45 ANSWER DOWNLOAD EXAMIANS APP
Number System A basket contains eight white and ten black balls. Two draws of one ball each are made without replacement. What is the probability that one ball is white and the other ball is black ? 80/152 80/153 80/151 80/150 80/152 80/153 80/151 80/150 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Two balls can be drawn from 18 balls in 18C2 Ways, ie 153 ways. One white from 8 white balls can be drawn in 8C1 = 8 ways and one black ball from 10 black can be drawn in 10C1 = 10 ways.∴ n(S) = 153, n(E) = 8 x 10 = 80∴ P(E) = 80/153
Number System If one-third of one fourth of a number is 15, then three-tenth of that number is: 35 45 54 25 35 45 54 25 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,1/3 of 1/4 of x = 15x = 15 * 12 = 180So, required number = (3/10 * 180) = 54.
Number System What is 50% of 40% of Rs. 3,450? 670 630 690 640 670 630 690 640 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 40% * 3450 = 1380then, 50 % * 1380 = 690
Number System A canteen requires 17 dozen of eggs per week. How many eggs will it require from January 1 to February 11 ? 1224 987 820 525 1224 987 820 525 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Number of days from Jan 1 to Feb 11th= 31 + 11 = 42 days = 6 weeks∴ Total eggs =17 x 12 x 6 = 1224
Number System Three seventh of a number is 12 more than 40% of that number. What will be the 60% of that number? 248 210 126 148 248 210 126 148 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3/7 x – 40/100 x = 12x = 35 * 1235 * 12 * 60/100 = 252/2 = 126
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