Number System 2/11 of 3/7 of 8/13 of 12012 = ? 241 321 576 449 241 321 576 449 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 2 x 3 x 8 x 12012/11 x 7 x 13 = 576
Number System On converting the following base-2 numeral in base ten, 1101101, we get 107 109 108 106 107 109 108 106 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 109
Number System The difference between a number and its three-fifth is 50. What is the number? None of these 125 75 100 None of these 125 75 100 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x - 3/5 x = 50 => 2/5 x = 50x = (50 * 5)/2 = 125.
Number System The sum and the product of two numbers are 25 and 144 respectively, the difference of the number is? 7 3 11 5 7 3 11 5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + y = 25xy = 144(x- y)2 = (x + y)2 – 4xy(x- y)2 = 625 – 576 => (x – y) = 7
Number System If x + y = 61 and xy = 888, What is the value of x²+ y² ? 1955 1965 1975 1945 1955 1965 1975 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 Three numbers are in ratio of 3: 4 :5. If the sum of first & third numbers is more than second number by 52, which will be largest number? 23 78 65 34 23 78 65 34 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 65
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