Number System If one third of 3/4 of a number is 21. Then find the number? 630 63 84 840 630 63 84 840 ANSWER DOWNLOAD EXAMIANS APP
Number System If x + y = 61 and xy = 888, What is the value of x²+ y² ? 1955 1975 1965 1945 1955 1975 1965 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 What is the greater of the two numbers whose product is 2560, given that the sum of the two numbers exceeds their difference by 64? 110 90 None of these 100 110 90 None of these 100 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the greater and the smaller number be g and s respectively.gs = 2560g + s exceeds g - s by 64 i.e., g + s - (g - s) = 64i.e., 2s = 64 => s = 32.g = 2560/s = 80.
Number System Complete the series : 1, 2, 3, 5, 8, 13 .... 9 7 1 4 9 7 1 4 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 1
Number System What is the value of 8/11 of 5/7 of 96% of 28875 ? 15400 14400 13800 12900 15400 14400 13800 12900 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Number = 8 x 5 x 96 x 28875/11 x 7 x 100 = 14400
Number System The difference between two integers is 5. Their product is 500. Find the numbers. 21, 26 15, 20 20, 25 30, 25 21, 26 15, 20 20, 25 30, 25 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the integers be x and (x + 5). Then, x(x + 5) = 500 x2 + 5x - 500 = 0 (x + 25)(x - 20) = 0 x = 20So, the numbers are 20 and 25.
EXAMIANS