Number System What is 50% of 40% of Rs. 3,450? 690 640 630 670 690 640 630 670 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 40% * 3450 = 1380then, 50 % * 1380 = 690
Number System What is the missing number in this series? 8 2 14 6 11 ? 14 6 18 12 2 3 7 9 2 3 7 9 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 9
Number System The product of two natural numbers is 17. Then, the sum of the reciprocals of their squares is: 290/289 289/290 1/289 289 290/289 289/290 1/289 289 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be a and b. Then,ab = 17, a = 1 and b = 17So, 1/a2 + 1/b2 = (a2 + b2)/a2 b2 = (12 + 172)/(1 * 17)2 = 290/289
Number System If (74)² is added to the square of a number the answer so obtained is 7780. What is the number ? 48 47 49 50 48 47 49 50 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.or, x² + (74)² = 7780or, x² = 7780 - 5476 = 2304∴ x = 48
Number System In a fraction, twice the numerator is two more than the denominator. If 3 is added to the numerator and the denominator each, then the resultant fraction will be 2/3 .What was the original fraction 19/12 7/12 17/12 11/12 19/12 7/12 17/12 11/12 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 7/12
Number System When 102 is reduced from a number, the number gets reduced by 88%. What is that number ? 650 750 850 550 650 750 850 550 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 850
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