Number System What is the average of the following set of numbers ? 173, 192, 198, 204, 211, 223, 227 204 234 210 222 204 234 210 222 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Avg = 173 + 192 + 198 + 204 + 211 + 223 + 227/7 = 1428/7 = 204
Number System (12.11)2 + (?)2 = 732.2921 14.2 24.2 17.2 20.2 14.2 24.2 17.2 20.2 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 24.2
Number System The difference between 8% of a number and 3% of the same number is 39. What is 2.8% of that number ? 21.84 27.84 25.84 24.84 21.84 27.84 25.84 24.84 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x(8 - 3)% = 39x = 3900/5 = 780∴ 2.8% of 780= 780 x 2.8/100 = 21.84
Number System In how many different ways can the letters of word "COLLEGE" be arranged ? 1260 1240 1300 1280 1260 1240 1300 1280 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Number of ways = 7!/2!2! = 1260(∵ L and E come twice)
Number System 486+32×25—59=? 567 528 596 582 567 528 596 582 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 528
Number System The sum of 8 consecutive odd numbers is 656. Also average of four consecutive even numbers is 87. What is the sum of the smallest odd number and second largest even number ? 158 163 167 160 158 163 167 160 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Average of 8 consecutive odd numbers = 656/8 = 82∴ Fourth number = 82 - 1 = 81∴ First numbers = 75Average of 4 even numbers = 87∴ Second even number = 87 - 1 = 86Second largest even number = 88∴ Required sum = 75 + 88 = 163
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