Number System What is the least number that should be added to 5200 to make it a perfect square ? 288 129 225 275 288 129 225 275 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP We sec (73)² = 5329 and (72)² = 5184ie 5329 > 5200 > 5184So 129 should be added to make is perfect square.
Number System In an examination, 68% of the total examinees passed. If the number of failures is 248, the total number of examinees is 640 750 725 775 640 750 725 775 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Failed students are 32% which is 248.∴ Total = 24800/32 = 775
Number System If A = 1, B = 3, C = 5 and so on, what do the numbers 3, 9, 7 stand for CAR CAT BED BAT CAR CAT BED BAT ANSWER EXPLANATION DOWNLOAD EXAMIANS APP BED
Number System (95.6x 910.3) ÷ 92.56256 = 9? 14.44 12.24 15.54 13.34 14.44 12.24 15.54 13.34 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 13.34
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 √(17)² + (17)² + (5)² - 2 = ? 16 19 17 18 16 19 17 18 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = √49 + 289 + 25 - 2 = √361 = 19
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