Number System Find the number of factors of 300 excluding 1 and itself. 14 15 16 18 14 15 16 18 ANSWER DOWNLOAD EXAMIANS APP
Number System 3√103823 = ? 41 44 47 52 41 44 47 52 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 3√103823 = 3√47 x 47 x 47 = 47
Number System Sum of the digits number is 8 and their product is 12. Find the difference between the digits? 6 None 4 2 6 None 4 2 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + y = 8xy = 12(x – y)2 = (x + y)2 – 4xy (x – y)2 = 64 – 48 => (x – y) = 4
Number System How many of the following numbers are divisible by 132? 264, 396, 462, 792, 968, 2178, 5184, 6336 7 5 4 6 7 5 4 6 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 132 = 11 * 3 * 4Clearly, 968 is not divisible by 3None of 462 and 2178 is divisible by 4And, 5284 is not divisible by 11Each one of the remaining four numbers is divisible by each one of 4, 3 and 11.So, there are 4 such numbers.
Number System When the square of a number is substracted from (68)², the answer so obtained is 2508. What is the number ? 44 45 46 47 44 45 46 47 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (68)² - x² = 2508Therefore, x² = 4624 = 2508Therefore, x = root of 2116 = 46
Number System On converting the following base-2 numeral in base ten, 1101101, we get 109 106 108 107 109 106 108 107 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 109
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