Number System The product of two natural numbers is 17. Then, the sum of the reciprocals of their squares is: 289 290/289 1/289 289/290 289 290/289 1/289 289/290 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 sum of 1 + 2 + 3+ ... + 27 ? 382 378 396 343 382 378 396 343 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Sum = 27 x (27 + 1)/2= 27 x 28/2= 27 x 14= 378
Number System Which is the smallest fractions among the following ? 27/31 13/15 15/19 11/13 27/31 13/15 15/19 11/13 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 11/13 = 0.8461,13/15 = 0.8666,27/31 = 0.87,15/19 = 0.789
Number System 2/11 of 3/7 of 8/13 of 12012 = ? 321 576 449 241 321 576 449 241 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 2 x 3 x 8 x 12012/11 x 7 x 13 = 576
Number System (12.04 x 7.5 + 0.8 x 45) ÷ 3 = ? 42.1 42.6 54.7 45 42.1 42.6 54.7 45 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (90.3 + 36) ÷ 3 = 126.3/3 = 42.1
Number System Sum of two numbers is 80. Greater number exceeds by 5 from four times of the smaller. Find the numbers? 64, 16 62, 18 60, 20 65, 15 64, 16 62, 18 60, 20 65, 15 ANSWER DOWNLOAD EXAMIANS APP
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