Number System When the square of a number is substracted from (68)², the answer so obtained is 2508. What is the number ? 45 47 44 46 45 47 44 46 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (68)² - x² = 2508Therefore, x² = 4624 = 2508Therefore, x = root of 2116 = 46
Number System If the sum of four consecutive numbers is 370, which the following is the third lowest number among them 92 89 90 91 92 89 90 91 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the four consecutive numbers be x, (x + 1), (x + 2), (x + 3) thenx + (x + 1) + (x + 2) + (x + 3) = 370= 4x + 6 = 370∴ x = 364/4 = 91∴ third lowest number among them = x + 1= 91 + 1 = 92
Number System How many numbers up to 100 and 300 are divisible by 11? 21 20 18 22 21 20 18 22 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (300 – 100)/11 = 200/11 = 18 2/1118 Numbers
Number System 36% of 850+? % of 592 = 750 50 25 12.5 75 50 25 12.5 75 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 75
Number System The sum of four consecutive even numbers is 36. Find the sum of the squares of these numbers? 252 296 388 344 252 296 388 344 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the four numbers be x, x + 2, x + 4 and x + 6.=> x + x + 2 + x + 4 + x + 6 = 36=> 4x + 12 = 36 => x = 6The numbers are 6, 8, 10 and 12.Sum of their squares = 62 + 82 + 102 + 122 = 36 + 64 + 100 + 144 = 344.
Number System What is the difference between the largest number and the least number written with the figures 3, 4, 7, 0, 3? 70983 43893 43983 43883 70983 43893 43983 43883 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 74330 Largest30347 Smallest-------------43983
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