Number System ?125÷5x ?=6265 1452 124 153 1253 1452 124 153 1253 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 1253
Number System 486+32×25—59=? 567 582 596 528 567 582 596 528 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 528
Number System The sum of two numbers is 25 and their difference is 13. Find their product. 114 325 315 104 114 325 315 104 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be x and y. Then x + y = 25 and x - y = 13.x = 19; y = 6xy = 19 * 6 = 114
Number System If x + y = 61 and xy = 888, What is the value of x²+ y² ? 1965 1945 1955 1975 1965 1945 1955 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 The average of 7 consecutive even numbers A, B, C, D, E, F and G is 36. What is the product of ' C and 'E' ? 1292 1468 1327 1168 1292 1468 1327 1168 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP A + B + C + D + E + F + G/7 = 36Therefore, D = 36Therefore, C = 34, E = 38Therefore, Product = 34 x 38 = 1292
Number System A canteen requires 17 dozen of eggs per week. How many eggs will it require from January 1 to February 11 ? 1224 525 820 987 1224 525 820 987 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Number of days from Jan 1 to Feb 11th= 31 + 11 = 42 days = 6 weeks∴ Total eggs =17 x 12 x 6 = 1224
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