Number System Find the number of factors of 300 excluding 1 and itself. 14 18 16 15 14 18 16 15 ANSWER DOWNLOAD EXAMIANS APP
Number System Complete the series : 1, 8, 27, 64, 125, 216 ..... 343 363 373 353 343 363 373 353 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 343
Number System The sum of three consecutive multiples of 3 is 72. What is the largest number? 21 24 36 27 21 24 36 27 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be 3x, 3x + 3 and 3x + 6.Then,3x + (3x + 3) + (3x + 6) = 729x = 63x = 7Largest number = 3x + 6 = 27.
Number System 2/11 of 3/7 of 8/13 of 12012 = ? 576 449 321 241 576 449 321 241 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 2 x 3 x 8 x 12012/11 x 7 x 13 = 576
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 80/152 80/150 80/151 80/153 80/152 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 450% of a number is 4725. What is 82% of that number ? 861 851 841 871 861 851 841 871 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x x 450/100 = 4725= x = 4725 x 100/450 = 1050∴ 82% of 1050 = 1050 x 82/100= 861
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