Number System In how many different ways can the letters of the word CORPORATION be arranged ? 1326400 3326400 2326400 None of these 1326400 3326400 2326400 None of these ANSWER EXPLANATION DOWNLOAD EXAMIANS APP CORPORATION = 11 letters 'O' comes thrice,'R' twice.∴ total no. of ways = 111/3121 = 3326400
Number System Supply the missing figure : 1, 4, 9, 16, 25 .... 49 42 16 36 23 42 16 36 23 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 36
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 29/145 27/143 28/144 30/146 29/145 27/143 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 √360 - 225 x 2 + 379 = ? 19 18 20 17 19 18 20 17 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = √360 - 225 x 2 + 379 = √360 - 450 + 379 = √289= 17
Number System 8988 / 8 / 4 = ? 280.875 4494 2247 561.75 280.875 4494 2247 561.75 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 8988 * 1/8 * 1/4 = 2247/8 = 280.875
Number System Two-third of a positive number and 25/216 of its reciprocal are equal. The number is: 12/5 5/12 144/25 25/144 12/5 5/12 144/25 25/144 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,2/3 x = 25/216 * 1/xx2 = 25/216 * 3/2 = 25/144 x = 5/12
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