Number System On dividing number by 357, we get 39 as remainder. On dividing the same number by 17, what will be the remainder? 0 3 11 5 0 3 11 5 ANSWER DOWNLOAD EXAMIANS APP
Number System A box contains 5 red, 4 black and 4 blue balls. If 3 balls are drawn randomly from the box, what is the probability that there are exactly 2 blue balls in the three drawn balls ? 27/143 28/144 29/145 30/146 27/143 28/144 29/145 30/146 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Total balls = 5 + 4 + 4 = 13∴ n(S) = 13C3 = 2862 blue balls can be selected from 4 balls in 4C2 = 6 ways and the remaining one ball is to be selected from 9 balls in 9C1 = 9 ways ∴ n(E) = 6 x 9∴ P(E) = 6 x 9/286 = 27/143
Number System If the sum of the two numbers is 22 and the sum of their squares is 404, then the product of the numbers is: 80 44 40 88 80 44 40 88 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be x and y. Then, (x + y) = 22 and x2 + y2 = 404 Now, 2xy = (x + y)2 - (x2 + y2) 2xy= 222 - 404 = 484 - 404 = 80xy = 40
Number System 1256+4813+765=? 6834 6831 6839 6836 6834 6831 6839 6836 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 1256+4813+765= 6069+765=6834
Number System 64% of 2650+40% 0f 320=? 2096 1578 1824 1247 2096 1578 1824 1247 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 1824
Number System Pick the wrong number from the given number series. 3,4,10,33,135,685,4116 135 685 33 10 135 685 33 10 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The correct number is 136.3 x 1 + 1 = 44 x 2 + 2 = 1010 x 3 + 3 = 3333 x 4 + 4 = 136136 x 5 + 5 = 685685 x 6 + 6 = 4116
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