Number System 1051.64 - 159.42 - 96.84 + 162.37 - 940.26 + 504 = ? 521.49 491.49 511.49 501.49 521.49 491.49 511.49 501.49 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 1718.01 - 1196.52 = 521.49
Number System 124, 235, 447, 760, 1174, ? 1589 1489 1389 1689 1589 1489 1389 1689 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP +111, +212, +313, +414
Number System How many times the keys of a typewriter have to be pressed in order to write first 400 counting numbers? 1092 1192 1082 1200 1092 1192 1082 1200 ANSWER DOWNLOAD EXAMIANS APP
Number System A certain number when divided by 39 leaves a remainder 20, what is the remainder when the same number is divided by 13? 11 5 7 0 11 5 7 0 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 39 + 20 = 59/13 = 7 (Remainder)
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 29/145 30/146 28/144 27/143 29/145 30/146 28/144 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 70% of an equal to 40% of b, then ratio between a and b is? 4: 7 7: 4 None 7: 11 4: 7 7: 4 None 7: 11 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 70 a = 40 ba: b = 4: 7
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