Number System Given √2 = 1.414, the value of √8 + 2√32 - 3√128 + 4√50 is 8.484 8.584 8.684 8.784 8.484 8.584 8.684 8.784 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 8.484
Number System (164 x 175) x ? = 258300 2 5 9 11 2 5 9 11 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 258300 / 164 x 175 = 9
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 ? 30/146 29/145 27/143 28/144 30/146 29/145 27/143 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 The difference between a two-digit number and the number obtained by interchanging the two digits is 63. Which is the smaller of the two numbers? 29 70 Cannot be determined 92 29 70 Cannot be determined 92 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the ten's digit be x and units digit by y.Then,(10x + y) - (10y + x) = 639(x - y) = 63x - y = 7Thus, none of the numbers can be determined.
Number System 0.333 .... × 0.444 .... is equal to 0.148148148 .... 1.333 .... 0.121212 .... 0.777 .... 0.148148148 .... 1.333 .... 0.121212 .... 0.777 .... ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 0.148148148 ....
Number System What is the sum of the local values of the digits 2, 3, 4, 5 in the number 2345? 5243 2435 2105 2345 5243 2435 2105 2345 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2000 + 300 + 40 + 5 = 2345
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