Number System (1024—263—233)÷(986—764— 156) =? 6 8 None of these 10 6 8 None of these 10 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 8
Number System If (182)² is added to the square of a number, the answer so obtained is 47765. What is the number ? 111 121 131 101 111 121 131 101 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be xTherefore x² + (182)² = 47765Therefore x² = 47765 - (182)2 = 47765 - 33124Therefore x² = 14641, Therefore x = 121
Number System The product of two natural numbers is 17. Then, the sum of the reciprocals of their squares is: 290/289 289 1/289 289/290 290/289 289 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 Two-third of a positive number and 25/216 of its reciprocal are equal. The number is: 25/144 5/12 12/5 144/25 25/144 5/12 12/5 144/25 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,2/3 x = 25/216 * 1/xx2 = 25/216 * 3/2 = 25/144 x = 5/12
Number System Find the number of factors of 300 excluding 1 and itself. 15 18 14 16 15 18 14 16 ANSWER DOWNLOAD EXAMIANS APP
Number System Which is the largest fraction among the following ? 24/25 12/13 21/22 21/23 24/25 12/13 21/22 21/23 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 21/23 = 0.913,12/13 = 0.92323/25 = 0.92, 21/22 = 0.9545, 24/25 = 0.96
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