Number System The product of two natural numbers is 17. Then, the sum of the reciprocals of their squares is: 289/290 290/289 1/289 289 289/290 290/289 1/289 289 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 3251 + 587 + 369 - ? = 3007 1250 1300 1200 1375 1250 1300 1200 1375 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let 4207 - x = 3007 Then, x = 4207 - 3007 = 1200
Number System The difference between 68% of a number and 35% of the same number is 1216. What is 28% of the number ? 1043.75 1027.75 1037.75 1031.75 1043.75 1027.75 1037.75 1031.75 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be xTherefore 68x / 100 - 35x / 100 = 1216 Therefore x = 1216 x 100 / 33Therefore 28% of x = 28x / 100 = 1216 x 100 / 33 x 28 / 100= 1216 x 100 x 28 / 33 x 1/100 = 1031.75
Number System 732.96 + 405.38 - 604.08 - 105.44 + 222.86 = ? 641.68 621.68 651.68 631.68 641.68 621.68 651.68 631.68 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 1361.20 - 709.52 = 651.68
Number System What is the sum of the local values of the digits 2, 3, 4, 5 in the number 2345? 2105 5243 2435 2345 2105 5243 2435 2345 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2000 + 300 + 40 + 5 = 2345
Number System (2560 x 1.4) +(7400 x 0.6) =? 6543 8024 7234 9160 6543 8024 7234 9160 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 8024
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