Number System What is the difference between the local values of 3 in the number 53403? 3003 0 3030 2997 3003 0 3030 2997 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3000 – 3 = 2997
Number System How many numbers up to 100 and 300 are divisible by 11? 18 21 22 20 18 21 22 20 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (300 – 100)/11 = 200/11 = 18 2/1118 Numbers
Number System What number should replace both the question marks (?) in the following question ? 85 83 82 84 85 83 82 84 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 84
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 ? 80/151 80/153 80/150 80/152 80/151 80/153 80/150 80/152 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 How many numbers up to 200 are divisible by 2 and 3 both? 29 33 27 35 29 33 27 35 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 200/6 = 33 2/6 => 33 Numbers
Number System 4500 * ? = 3375 3/5 1/4 3/4 2/5 3/5 1/4 3/4 2/5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 4500 * x = 3375= x = 3375/4500 = 3/4
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