Number System The sum of the digits of a two digit number is 12. If the new number formed by reversing the digits is greater than the original number by 54, then what will be the original number? 59 69 49 39 59 69 49 39 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 39
Number System If the numerator of a fraction is decreased by 12.5% and the denominator is increased by 180% the resultant fraction is 1/2. What is the original fraction ? 3/5 1/5 7/5 8/5 3/5 1/5 7/5 8/5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the original fraction be x/y.∴ x x 87.5/100/y x 280/100 = 1/2or 87.5x/280y = 1/2∴ 175x = 280y∴ x/y = 280/175 = 8/5
Number System Sum of the digits number is 8 and their product is 12. Find the difference between the digits? 6 2 4 None 6 2 4 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 √2304 x √? = 2832 3681 3581 3481 3381 3681 3581 3481 3381 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP √2304 x √? = 2832= 48 x √? = 2832= √? = 2832/48 = 59∴? = 59 x 59 = 3481
Number System (12.11)2 + (?)2 = 732.2921 17.2 24.2 20.2 14.2 17.2 24.2 20.2 14.2 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 24.2
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