Number System How many numbers up to 300 and 700 are divisible by 2, 3 and 7 both together? 9 10 8 11 9 10 8 11 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (700 – 300)/42 = 9 22/42 => 9 Numbers
Number System How many figures are required for numbering the pages of a book containing 1000 pages? 2883 2893 3892 6489 2883 2893 3892 6489 ANSWER DOWNLOAD EXAMIANS APP
Number System What is the least number to be subtracted from 696 to make it a perfect square? 1 20 71 16 1 20 71 16 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The numbers less than 696 and are squares of certain numbers are 676, 625.The least number that should be subtracted from 696 to make it perfect square = 696 - 676 = 20.
Number System When (21)² is subtracted from the square of a number the answer obtained is 1584. What is the number ? 55 65 45 35 55 65 45 35 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.According to the question,x² - (21)² = 1584= x² - 441 = 1584 = x² = 1584 + 441 = 2025∴ x = √2025 = 45
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. 25 125 50 30 25 125 50 30 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP H.C.F = (Product of the numbers) / (Their L.C.M) = 18750/750 = 25.
Number System A number when divided by 221 gives a remainder 43, what remainder will be obtained by dividing the same number 17? 10 11 5 9 10 11 5 9 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 221 + 43 = 264/17 = 9 (Remainder)
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