Number System (164 x 175) x ? = 258300 5 2 11 9 5 2 11 9 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 258300 / 164 x 175 = 9
Number System (4 86%of 6500) ÷ 36 =? 877.5 777.5 677.5 977.5 877.5 777.5 677.5 977.5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 877.5
Number System The difference between a two-digit number and the number obtained by interchanging the digits is 36. What is the difference of the two digits of the number ? 4 1 2 3 4 1 2 3 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (10x + y) - (10y + x) = 36,9(x - y) = 36/9 = 4
Number System If (182)² is added to the square of a number, the answer so obtained is 47765. What is the number ? 101 131 121 111 101 131 121 111 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be xTherefore x² + (182)² = 47765Therefore x² = 47765 - (182)2 = 47765 - 33124Therefore x² = 14641, Therefore x = 121
Number System If the sum of four consecutive numbers is 370, which the following is the third lowest number among them 91 92 90 89 91 92 90 89 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 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