Number System 93296 - 45874 + 20382 - 56817 = ? 109857 109887 109867 109877 109857 109887 109867 109877 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 113678 - 102691 = 109887
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 ? 28/144 30/146 27/143 29/145 28/144 30/146 27/143 29/145 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 What is the difference between the largest number and the least number written with the digits 7, 3, 1, 4? 6184 6048 6084 5084 6184 6048 6084 5084 ANSWER DOWNLOAD EXAMIANS APP
Number System If 35% of a number is 899.5, what is 68% of that number ? 2247.6 1747.6 1547.6 1847.6 2247.6 1747.6 1547.6 1847.6 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Suppose the number is x.Then 35% of x = 899.5∴ 68% of x = 68/35 x 899.5 = 1747.6
Number System In how many different ways can the letters of the word "MOBILIZE" be arranged ? 19765 18456 17453 20160 19765 18456 17453 20160 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The word MOBILIZE has eight letters in which I comes twice ∴ Number of arrangements = 8!/2! = 20160
Number System A number exceeds by 25 from its 3/8 part. Then the number is? 32 40 35 39 32 40 35 39 ANSWER DOWNLOAD EXAMIANS APP
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