Number System 450% of a number is 4725. What is 82% of that number ? 851 841 871 861 851 841 871 861 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x x 450/100 = 4725= x = 4725 x 100/450 = 1050∴ 82% of 1050 = 1050 x 82/100= 861
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 ? 29/145 28/144 30/146 27/143 29/145 28/144 30/146 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 {3√4913}² = ? 121 333 225 289 121 333 225 289 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = (3√4913)² = (17)² = 289
Number System In how many different ways can the letters of the word 'DETERMINE' be arranged ? 63480 61480 60480 62480 63480 61480 60480 62480 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP No. of arrangements = 9! / 3! Because, E comes 3 times = 60480
Number System 0.333 .... × 0.444 .... is equal to 0.777 .... 0.121212 .... 0.148148148 .... 1.333 .... 0.777 .... 0.121212 .... 0.148148148 .... 1.333 .... ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 0.148148148 ....
Number System In how many different ways can the letters of word "SENTENCE" be arranged ? 6460 2360 3260 3360 6460 2360 3260 3360 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Number of ways = 8!/3! 2! = 40320/12 = 3360
EXAMIANS