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Express 77, 91 as product of two primes....

Express 77, 91 as product of two primes.

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NCERT TELUGU-PLAYING WITH NUMBERA-EXERCISE
  1. Find the LCM of the numbers 25, 30, 50 by the division method?

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  2. If the LCM and HCF of two numbers is 144 and 12. One of the number is ...

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  3. The product of two numbers is 2028. Their LCM is 156. Find the HCF.

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  4. Find the polyndrome number of 9 digits and check whether it is divisib...

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  5. Fill in the blanks, so that the number is divisible by 6 is 532.

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  6. Fill in the blanks, so that the number is divisible by 6 is 943.

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  7. Is 98793 is divisible by 9. Vefify without actual division.

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  8. Are all the numbers divisible by 5 are divisible by 10?

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  9. Check whether the following pair of numbers are co-primes (Relatively ...

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  10. Write pairs of twin primes between 40 and 80?

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  11. Write the common multiples of 12, 9?

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  12. What is the GCD of two consecutive numbers? Give example?

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  13. If 2739 is divisible by 3. What is the digit in place of blank.

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  14. Is 7 is a common factor of 28, 42, 63.

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  15. What is the number that divides 403, 434 and 465 without leaving any r...

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  16. Ramu has 12 coins with him. How could he arrange his coins in differen...

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  17. Express 77, 91 as product of two primes.

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  18. Express 111, 95 as sum of three prime numbers.

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  19. Write pairs of prime numbers whose difference is 100?

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  20. Verify whether 82672 is divisible by 8?

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