Number System If the L.C.M of two numbers is 750 and their product is 18750, find the H.C.F of the numbers. 125 50 25 30 125 50 25 30 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP H.C.F = (Product of the numbers) / (Their L.C.M) = 18750/750 = 25.
Number System When 732 is subtracted form the square of a number, the answer that is obtained is 5280. What is the number? 103 97 99 101 103 97 99 101 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x2 - 732 = 5280 x2 = 5280 + (70+3)2 = 5280 + 4900 + 420 + 9 = 10609= 10000 + 2(100)(3) + 32 = (100 + 3)2x = 100 + 3 = 103.
Number System 7589 - ? = 3434 4242 4155 1123 11023 4242 4155 1123 11023 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let 7589 - x = 3434Then x = 7589 - 3434 = 4155
Number System ?2704 x ?2209=? 4444 3444 2444 1444 4444 3444 2444 1444 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2444
Number System If 35% of a number is 899.5, what is 68% of that number ? 2247.6 1547.6 1847.6 1747.6 2247.6 1547.6 1847.6 1747.6 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Suppose the number is x.Then 35% of x = 899.5∴ 68% of x = 68/35 x 899.5 = 1747.6
Number System 4550 ÷ 25% of ? = 130 135 140 125 130 135 140 125 130 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 4550 ÷ ? x 25/100 = 130= 4550 ÷ ?/4 = 130= 4550 x 4/? = 130= ? x 130 = 4550 x 4= ? = 4550 x 4/130 = 140
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