Number System What is the least number to be subtracted from 696 to make it a perfect square? 71 16 20 1 71 16 20 1 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The numbers less than 696 and are squares of certain numbers are 676, 625.The least number that should be subtracted from 696 to make it perfect square = 696 - 676 = 20.
Number System A number consists of two digits. If 3/5 of 1/5 of the number is 9. Find the sum of its two digits? 12 60 8 7 12 60 8 7 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x * 3/5 * 1/5 = 9x = 75 => 7 + 5 = 12
Number System If one-seventh of a number is 55 then 40% of that number = ? 147 154 171 163 147 154 171 163 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be x , Therefore, x/7 = 55Therefore, x = 55 x 7 = 385Therefore, 49% of 385 = 154
Number System Sum of the digits number is 8 and their product is 12. Find the difference between the digits? 4 6 2 None 4 6 2 None ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + y = 8xy = 12(x – y)2 = (x + y)2 – 4xy (x – y)2 = 64 – 48 => (x – y) = 4
Number System What number should replace both the question marks (?) in the following question ? 83 85 82 84 83 85 82 84 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 84
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 13/25 3/5 6/7 12/25 13/25 3/5 6/7 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the fraction be x/yWe have 150x/120y = 9/15= x/y = 12/25
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