Number System If the fractions8/5,7/2,9/5,5/4,4/5 are arranged in descending order of their values, which one will be fourth? 7/9 11/13 5/4 1/3 7/9 11/13 5/4 1/3 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 5/4
Number System Two-third of a positive number and 25/216 of its reciprocal are equal. The number is: 12/5 144/25 5/12 25/144 12/5 144/25 5/12 25/144 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,2/3 x = 25/216 * 1/xx2 = 25/216 * 3/2 = 25/144 x = 5/12
Number System If x + y = 61 and xy = 888, What is the value of x²+ y² ? 1945 1965 1975 1955 1945 1965 1975 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 If one-third of one fourth of a number is 15, then three-tenth of that number is: 45 25 54 35 45 25 54 35 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,1/3 of 1/4 of x = 15x = 15 * 12 = 180So, required number = (3/10 * 180) = 54.
Number System 5525 ÷ 17 = √? 99225 112225 105625 93025 99225 112225 105625 93025 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP √? = 5525/17 = 325∴ ? = (325)² = 105625
Number System How many numbers up to 300 and 700 are divisible by 2, 3 and 7 both together? 11 10 8 9 11 10 8 9 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (700 – 300)/42 = 9 22/42 => 9 Numbers
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