Number System If 1.5 x= 0.04 y, then the value of (y-x) (y+x) is: 93/77 77/73 73/77 83/77 93/77 77/73 73/77 83/77 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 73/77
Number System If the numberator of a fraction is increased by 50% and denominator by 20% the fraction become 9/15. What was the original fraction ? 12/25 6/7 3/5 13/25 12/25 6/7 3/5 13/25 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the fraction be x/yWe have 150x/120y = 9/15= x/y = 12/25
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 6373 6363 6383 6353 6373 6363 6383 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 7.98 x 3.75 + 1.28 x 15.5 = ? 46.765 49.765 47.765 48.765 46.765 49.765 47.765 48.765 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 29.925 + 19.84 = 49.765
Number System √(17)² + (17)² + (5)² - 2 = ? 18 16 17 19 18 16 17 19 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = √49 + 289 + 25 - 2 = √361 = 19
Number System How many numbers up to 100 are divisible by 7? 93 14 107 100 93 14 107 100 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 100/7 = 14 2/7 => 14 Numbers