Number System If a number is subtracted from its square we get 272. Find the number? 24 14 17 22 24 14 17 22 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x2 – x = 272 => x =17
Number System If the difference between a number and two-fifths of that number is 45 what is the number ? 78 76 77 75 78 76 77 75 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x ∴ x - 2x/5 = 45∴ x = 75
Number System Find the greatest number which leaves the same remainder when it divides 25, 57 and 105. 18 8 16 12 18 8 16 12 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 105 - 57 = 4857 - 25 = 32105 - 25 = 80The H.C.F of 32, 48 and 80 is 16.
Number System What is the remainder when 263251 is divided by 9? 3 6 8 1 3 6 8 1 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP If the sum of the digits of a number is divisible by 9, the number will be divisible by 9.2 + 6 + 3 + 2 + 5 + 1 = 19The nearest multiple of 9 is 18.19 - 18 = 1.
Number System Let R = qs—4. When s=8, R=16. When s=10, R is equal to 21 20 22 23 21 20 22 23 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 21
Number System √207.36 = ? 16.7 12.3 15.7 14.4 16.7 12.3 15.7 14.4 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP √207.36 = √20736/√100 = 144/10 = 14.4
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