Number System (12.11)2 + (?)2 = 732.2921 14.2 20.2 17.2 24.2 14.2 20.2 17.2 24.2 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 24.2
Number System Find the smallest number which should be multiplied with 520 to make it a perfect square. 55 120 30 None of these 55 120 30 None of these ANSWER DOWNLOAD EXAMIANS APP
Number System If the following fractions 7/6, 6/7, 5/3, 8/13 and 6/5 are arranged in descending order, which will be the last in the series? 9/13 7/13 6/13 8/13 9/13 7/13 6/13 8/13 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 7/6 = 1.166, 6/7 = 0.857,5/3 = 1.66,8/13 = 0.615,6/5 = 1.2Therefore, 5/3 > 6/5 > 7/6 > 6/7 > 8/13
Number System 84 * 29 + 365 = ? 2801 - 2801 - 2071 2436 2801 - 2801 - 2071 2436 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP - 84 * (30 - 1) + 365= - (84 * 30) + 84 + 365= - 2520 + 449 = - 2071
Number System The product of two natural numbers is 17. Then, the sum of the reciprocals of their squares is: 1/289 289/290 289 290/289 1/289 289/290 289 290/289 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 In how many different ways can the letters of the word 'DETERMINE' be arranged ? 61480 60480 63480 62480 61480 60480 63480 62480 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP No. of arrangements = 9! / 3! Because, E comes 3 times = 60480
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