Number System When the square of a number is substracted from (68)², the answer so obtained is 2508. What is the number ? 45 47 46 44 45 47 46 44 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (68)² - x² = 2508Therefore, x² = 4624 = 2508Therefore, x = root of 2116 = 46
Number System (95.6x 910.3) ÷ 92.56256 = 9? 13.34 14.44 12.24 15.54 13.34 14.44 12.24 15.54 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 13.34
Number System The difference between a number and its three-fifth is 50. What is the number? 125 75 None of these 100 125 75 None of these 100 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x - 3/5 x = 50 => 2/5 x = 50x = (50 * 5)/2 = 125.
Number System Find the average of the following set of scores 450, 1050, 12, 390, 143, 286, 550, 999 480 495 490 485 480 495 490 485 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Required average score = (450 + 1050 + 12 + 390 + 143 + 286 + 550 + 999) / 8 = 3880 / 8 = 485
Number System The average of five consecutive even numbers, p, q, r, s and t is 40. What is the product of 'r' and 's' ? 1780 1580 1480 1680 1780 1580 1480 1680 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be x, x + 2, x + 4, x + 6, and x + 8Avg = x + x + 2 + x + 4 + x + 6 + x + 8/5 = 40Therefore, 5x + 20 = 200Therefore, x = 180/5 = 36Therefore, r = x + 4 = 40 s = x + 6 = 42Therefore, Product = 1680
Number System 217 * 217 + 183 * 183 = ? 81268 80578 80698 79698 81268 80578 80698 79698 ANSWER DOWNLOAD EXAMIANS APP
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