Number System The product of two natural numbers is 17. Then, the sum of the reciprocals of their squares is: 290/289 289 289/290 1/289 290/289 289 289/290 1/289 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 What is the missing number in this series? 8 2 14 6 11 ? 14 6 18 12 7 3 9 2 7 3 9 2 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 9
Number System 1827÷ 36 x ?=162.4 3.2 2.6 4.3 1.9 3.2 2.6 4.3 1.9 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3.2
Number System 50% of 8/15 of 9/4 of 5/3 of 333 = ? 444 333 555 666 444 333 555 666 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 50% of [8x9x5/15x4x3 x 333]= 50% of 666= 333
Number System When 102 is reduced from a number, the number gets reduced by 88%. What is that number ? 550 650 750 850 550 650 750 850 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 850
Number System The difference between 71% of a number and 46% and of the same number is 212. What is 75% of that number 673 845 636 724 673 845 636 724 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ 71% of x - 46% of x = 212∴ (71 - 46)% of x = 212∴ 25/100 x x = 212∴ x = 212 x 4 = 848∴ 75% of 848 = 848 x 75/100 = 636
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