Number System 4.78% of 1255 + 3.24% of 440=0.5% of ? 13849 11849 14849 12849 13849 11849 14849 12849 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 0.5 x ?/100 = 4.78 x 1255/100 + 3.24 x 440/100= 59.989 + 14.256∴ ? = 74.245 x 100/0.5 = 14849
Number System What is the value of ? in the following equations ? 72/? = ?/50 40 80 100 60 40 80 100 60 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (?)² = 72 x 50= (6 x 6 x 2) x (5 x 5 x 2)= (6 x 5 x 2)² = (60)²∴ ? = 60
Number System If x + y = 61 and xy = 888, What is the value of x²+ y² ? 1975 1965 1945 1955 1975 1965 1945 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 728.038 x 54.978 - 72.016 x 85.250 = ? 23900 53900 33900 43900 23900 53900 33900 43900 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 728 x 55 - 72 x 85.25 = 40040 - 6138 = 339900
Number System Find out the smallest possible number which will be divisible by 1122 as well as 153. 2366 3366 4366 1366 2366 3366 4366 1366 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3366
Number System 5525 ÷ 17 = √? 93025 99225 112225 105625 93025 99225 112225 105625 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP √? = 5525/17 = 325∴ ? = (325)² = 105625
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