Number System What is the sum of 1 + 2 + 3+ ... + 27 ? 343 382 396 378 343 382 396 378 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Sum = 27 x (27 + 1)/2= 27 x 28/2= 27 x 14= 378
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 The difference between a number and its three-fifth is 50. What is the number? 100 125 None of these 75 100 125 None of these 75 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x - 3/5 x = 50 => 2/5 x = 50x = (50 * 5)/2 = 125.
Number System 3√103820 x 3√274620 = ? 3065 3055 3045 3035 3065 3055 3045 3035 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3√103820 = 47 and 3√274620 = 65 ∴ ? = 47 x 65 = 3055
Number System On dividing number by 5, we get 3 as remainder. What will be the remainder when the square of this number is divided by 5? 0 4 1 2 0 4 1 2 ANSWER DOWNLOAD EXAMIANS APP
Number System If the fractions8/5,7/2,9/5,5/4,4/5 are arranged in descending order of their values, which one will be fourth? 5/4 11/13 1/3 7/9 5/4 11/13 1/3 7/9 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 5/4
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