Number System What least number should be added to 8602 to make it a perfect square ? 51 47 36 41 51 47 36 41 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP So, (93)² = 8649So, the required number to be added to make a perfect square = 8649 - 8602 = 47
Number System A laborer is engaged for 30 days on the condition that he receives Rs.25 for each day he works and is fined Rs.7.50 for each day is absent. He gets Rs.425 in all. For how many days was he absent? 8 6 10 9 8 6 10 9 ANSWER DOWNLOAD EXAMIANS APP
Number System When 102 is reduced from a number, the number gets reduced by 88%. What is that number ? 550 750 650 850 550 750 650 850 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 850
Number System Two numbers are in the ratio 3:5. If 9 be subtracted from each, they are in the ratio of 9:17. The first number is: 30 36 27 18 30 36 27 18 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (3x-9):(5x-9) = 9:17 x = 12 => 3x = 36
Number System Look at this series: 1000, 200, 40, ... What number should come next? 2 14 8 24 2 14 8 24 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP This is a simple division series. Each number is divided by 5. Rule = (1st number / 5 = 2nd number) (2nd number / 5 = 3rd number)....Now, (1000 / 5 = 200), (200 / 5 = 40), (40 / 5 = 8)...So answer is a = 8.
Number System If x + y = 61 and xy = 888, What is the value of x²+ y² ? 1945 1955 1975 1965 1945 1955 1975 1965 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
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