Number System If x + y = 61 and xy = 888, What is the value of x²+ y² ? 1945 1975 1965 1955 1945 1975 1965 1955 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 Supply the missing figure : 2, 6, 12, 20, 30 ... 56 40 39 42 41 40 39 42 41 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 42
Number System By how much is 3/5th of 875 greater than 2/3 of 333? 233 362 199 303 233 362 199 303 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3/5th of 875 is greater than 2/3rd of 333= 3/5 * 875 - 2/3 * 333= 525 - 222 = 303.
Number System Which is the smallest fractions among the following ? 11/13 15/19 27/31 13/15 11/13 15/19 27/31 13/15 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 11/13 = 0.8461,13/15 = 0.8666,27/31 = 0.87,15/19 = 0.789
Number System What is the missing number in this series? 8 2 14 6 11 ? 14 6 18 12 2 9 3 7 2 9 3 7 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 9
Number System The difference between 8% of a number and 3% of the same number is 39. What is 2.8% of that number ? 24.84 21.84 27.84 25.84 24.84 21.84 27.84 25.84 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x(8 - 3)% = 39x = 3900/5 = 780∴ 2.8% of 780= 780 x 2.8/100 = 21.84
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