Number System If x + y = 61 and xy = 888, What is the value of x²+ y² ? 1955 1945 1965 1975 1955 1945 1965 1975 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 : 1, 4, 9, 16, 25 .... 49 16 42 23 36 16 42 23 36 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 36
Number System On dividing a number by 68, we get 269 as quotient and 0 as remainder. On dividing the same number by 67, what will be the remainder? 2 0 1 3 2 0 1 3 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Number = 269 * 68 + 0 = 1829267) 18292 (273 18291 -------- 1Required number = 1.
Number System 5525 ÷ 17 = √? 93025 105625 112225 99225 93025 105625 112225 99225 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP √? = 5525/17 = 325∴ ? = (325)² = 105625
Number System If the sum of four consecutive numbers is 370, which the following is the third lowest number among them 91 92 89 90 91 92 89 90 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the four consecutive numbers be x, (x + 1), (x + 2), (x + 3) thenx + (x + 1) + (x + 2) + (x + 3) = 370= 4x + 6 = 370∴ x = 364/4 = 91∴ third lowest number among them = x + 1= 91 + 1 = 92
Number System Which is the largest fraction among the following ? 12/13 24/25 21/22 21/23 12/13 24/25 21/22 21/23 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 21/23 = 0.913,12/13 = 0.92323/25 = 0.92, 21/22 = 0.9545, 24/25 = 0.96
EXAMIANS