Number System In how many different ways can the letters of the word 'FRUGAL'be arranged ? 660 556 515 720 660 556 515 720 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP In FRUGAL there ae six difference letters Therefore, 6 ! = 6 x 5 x 4 x 3 x 2 x 1 = 720
Number System The difference between 71% of a number and 46% and of the same number is 212. What is 75% of that number 673 636 845 724 673 636 845 724 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ 71% of x - 46% of x = 212∴ (71 - 46)% of x = 212∴ 25/100 x x = 212∴ x = 212 x 4 = 848∴ 75% of 848 = 848 x 75/100 = 636
Number System Given √2 = 1.414, the value of √8 + 2√32 - 3√128 + 4√50 is 8.684 8.584 8.784 8.484 8.684 8.584 8.784 8.484 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 8.484
Number System A, B, C, D and E are consecutive even numbers respectively. The average of 5 numbers is 82. What is the product of C and E ? 6353 6363 6383 6373 6353 6363 6383 6373 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + x + 1 + x + 2 + x + 3 + x + 4 = 5 x 82= 5x + 10 = 410 = 5x = 400= x = 400/5 = 80 ∴ A = 80C = 82and E = 84= C x E = 82 x 84 = 6383
Number System Which one of the following represents the sum of the first n even numbers? N(N + 1) N2 N(N – 1) N2+ 1 N(N + 1) N2 N(N – 1) N2+ 1 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP N (N + 1)
Number System 7.98 x 3.75 + 1.28 x 15.5 = ? 46.765 47.765 48.765 49.765 46.765 47.765 48.765 49.765 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 29.925 + 19.84 = 49.765
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