Number System 106 * 106 - 94 * 94 = ? 2000 1906 2400 1904 2000 1906 2400 1904 ANSWER DOWNLOAD EXAMIANS APP
Number System Find the least number with which 16200 should be multiplied, to make it a perfect cube. 48 360 45 36 48 360 45 36 ANSWER DOWNLOAD EXAMIANS APP
Number System Which is the largest fraction among the following ? 24/25 21/22 21/23 12/13 24/25 21/22 21/23 12/13 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 70% of an equal to 40% of b, then ratio between a and b is? None 7: 4 7: 11 4: 7 None 7: 4 7: 11 4: 7 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 70 a = 40 ba: b = 4: 7
Number System The sum and the product of two numbers are 25 and 144 respectively, the difference of the number is? 11 3 5 7 11 3 5 7 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 The difference between a two-digit number and the number obtained by interchanging its two digits is 45. The sum of the digit of the number is 9. What is the product of the two digits of the number? 13 14 15 12 13 14 15 12 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be 10x + y.Therefore, x + y = 9 ..................(i)10x + y - (10y + x) = 4510x + y - 10y - x = 45Therefore, x - y = 5 ..................(ii)From (i) and (ii), x = 7, y = 2Number = 72Therefore, = x x y = 7 x 2 = 14
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