Number System 2536+4851—?=3450+313 3624 4567 6784 5243 3624 4567 6784 5243 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3624
Number System If the numerator of a fraction is increased by 200% and the denominator by 300%, the fraction thus obtained is 1/36. What is the original fractions ? 5/9 3/9 6/9 4/9 5/9 3/9 6/9 4/9 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the fractions be x/yx + 200% of x/y + 300% of y = 1/3= x + 2x/y + 3y = 1/3= 3x/4y = 1/3Hence x/y = 4/9
Number System What is the missing number in this series? 8 2 14 6 11 ? 14 6 18 12 9 3 2 7 9 3 2 7 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 9
Number System If the sum of the two numbers is 22 and the sum of their squares is 404, then the product of the numbers is: 80 40 88 44 80 40 88 44 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be x and y. Then, (x + y) = 22 and x2 + y2 = 404 Now, 2xy = (x + y)2 - (x2 + y2) 2xy= 222 - 404 = 484 - 404 = 80xy = 40
Number System What least number shall be added to 4700 to make it a perfect square ? 91 71 81 61 91 71 81 61 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (69)² = 4761 and (68)² = 4624Clerly 4624 < 4700 < 4761So 61 should be added to make 4700 a perfect square.
Number System The square root of 0.0081 is: 0.9 0.09 0.009 0.91 0.9 0.09 0.009 0.91 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 0.09
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