Number System A bag contains eighteen 25-paise coins, seventeen 50-paise coins, twentytwo one-rupee coins, nine 2-rupee coins and three 5-rupee coins. What is the total amount in the bag (Ans in rupees) ? Rs. 62 Rs. 79 Rs. 74 Rs. 68 Rs. 62 Rs. 79 Rs. 74 Rs. 68 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Total = 18/7 + 17/2 + 22 + 9 x 2 + 3 x 5 = 4.5 + 8.5 + 22 + 18 + 15 = Rs 68
Number System The product of two natural numbers is 17. Then, the sum of the reciprocals of their squares is: 289 290/289 289/290 1/289 289 290/289 289/290 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 3 7 2 9 3 7 2 9 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 9
Number System ind the number, difference between number and its 3/5 is 50 124 125 120 123 124 125 120 123 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number = x,Then, x-(3/5)x = 50,=> (2/5)x = 50 => 2x = 50*5,=> x = 125
Number System 3√103823 = ? 52 44 47 41 52 44 47 41 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 3√103823 = 3√47 x 47 x 47 = 47
Number System 7589 - ? = 3434 4242 11023 4155 1123 4242 11023 4155 1123 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let 7589 - x = 3434Then x = 7589 - 3434 = 4155
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