Number System 0.333 .... × 0.444 .... is equal to 0.777 .... 0.121212 .... 0.148148148 .... 1.333 .... 0.777 .... 0.121212 .... 0.148148148 .... 1.333 .... ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 0.148148148 ....
Number System If the sum and difference of two numbers are 20 and 8 respectively, then the difference of their square is: 28 12 160 180 28 12 160 180 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be x and y. Then, x + y = 20 and x - y = 8x2 - y2 = (x + y)(x - y) = 20 * 8 = 160.
Number System The difference between two integers is 5. Their product is 500. Find the numbers. 30, 25 15, 20 20, 25 21, 26 30, 25 15, 20 20, 25 21, 26 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the integers be x and (x + 5). Then, x(x + 5) = 500 x2 + 5x - 500 = 0 (x + 25)(x - 20) = 0 x = 20So, the numbers are 20 and 25.
Number System Which is the largest fraction among the following ? 12/13 21/22 21/23 24/25 12/13 21/22 21/23 24/25 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 21/23 = 0.913,12/13 = 0.92323/25 = 0.92, 21/22 = 0.9545, 24/25 = 0.96
Number System If the numberator of a fraction is increased by 50% and denominator by 20% the fraction become 9/15. What was the original fraction ? 12/25 3/5 13/25 6/7 12/25 3/5 13/25 6/7 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the fraction be x/yWe have 150x/120y = 9/15= x/y = 12/25
Number System How many numbers up to 300 and 700 are divisible by 2, 3 and 7 both together? 10 9 8 11 10 9 8 11 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (700 – 300)/42 = 9 22/42 => 9 Numbers
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