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RD SHARMA-PLAYING WITH NUMBERS-All Questions
- The HCF of an even number and an odd number is 1 (b) 2 ...
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- The HCF of an even number and an odd number is 1 (b) 2 ...
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- The LCM of 24, 36 and 40 is 4 (b) 90 (c) 360...
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- If x\ a n d\ y are two co-primes, then their LCM is x y (b) x+y ...
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- If the HCF of two numbers is 16 and their product is 3072, then the...
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- The least number divisible by 15, 20, 24, 32 and 36 is 1440 ...
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- The smallest number which when diminished by 3 is divisible by 11, ...
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- Three numbers are in the ratio 1:2:3 and their HCF is 6, the number...
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- The ratio of two numbers is 3:4 and their HCF is 4. Their LCM is 12...
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- Which of the following numbers is prime? 23 (b) 51 (c...
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- Which of the following numbers are twin primes? 3, 5 (b) ...
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- What smallest digit be written in the blank space of the number ......
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- Which of the following numbers is divisible by 6? 1258 (b) ...
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- Which of the following numbers is divisible by 11? 7138965 ...
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- Which of the following numbers is a perfect number? 12 (b)...
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- Which of the following numbers is not divisible by 4? 78536 ...
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- The smallest prime just greater than the HCF of 84 and 144 is 11 ...
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- Every counting number has an infinite number of factors ...
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- What least number should be replaced by * so that the number 37610*...
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- Make a list of seven consecutive numbers, none of which is prime.
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