Number System What should come in the place of question mark (?) in the number series given below? 159 157 158 160 159 157 158 160 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 160
Number System If the sum of four consecutive numbers is 370, which the following is the third lowest number among them 89 90 91 92 89 90 91 92 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the four consecutive numbers be x, (x + 1), (x + 2), (x + 3) thenx + (x + 1) + (x + 2) + (x + 3) = 370= 4x + 6 = 370∴ x = 364/4 = 91∴ third lowest number among them = x + 1= 91 + 1 = 92
Number System Ratio between two numbers is 3: 4 and their sum is 420. Find the smaller number? 140 160 240 180 140 160 240 180 ANSWER DOWNLOAD EXAMIANS APP
Number System What should come in place of the question mark (?) in the following number series ? 888 888 444 148 ? 7.4 33 37 35 29 33 37 35 29 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 888 ÷ 1 = 888888 ÷ 2 = 444444 ÷ 3 = 148148 ÷ 4 = 3737 ÷ 5 = 7.4
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 ? 80/153 80/151 80/152 80/150 80/153 80/151 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 666 / 6 / 3 = ? 111 37 84 333 111 37 84 333 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 666 * 1/6 * 1/3 = 37
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