Number System Find the smallest number which should be multiplied with 520 to make it a perfect square. 120 55 30 None of these 120 55 30 None of these ANSWER DOWNLOAD EXAMIANS APP
Number System Given √2 = 1.414, the value of √8 + 2√32 - 3√128 + 4√50 is 8.784 8.484 8.584 8.684 8.784 8.484 8.584 8.684 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 8.484
Number System If x + y = 61 and xy = 888, What is the value of x²+ y² ? 1975 1965 1955 1945 1975 1965 1955 1945 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Because (x + y)² = x² + y² + 2xy∴ x² + y² = (x + y)² - 2xy∴ x² + y² = (61)² - 2 x 888= 3721 - 1776 = 1945
Number System How many figures are required for numbering the pages of a book containing 1000 pages? 2883 2893 3892 6489 2883 2893 3892 6489 ANSWER DOWNLOAD EXAMIANS APP
Number System In how many different ways can be the letters of the word PENCIL be arranged among themselves ? 640 860 720 510 640 860 720 510 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Total six letters are there and hence the number of arrangements = 6! = 6 x 5 x 4 x 3 x 2 x 1 = 720
Number System What is the missing number in this series? 8 2 14 6 11 ? 14 6 18 12 9 2 7 3 9 2 7 3 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 9
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