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Identify different co-primes between 50 ...

Identify different co-primes between 50 and 70.

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Write the prime and composite numbers between 50 ad 70?

From the following numbers identify different pairs of co-primes. 2, 3, 4, 5, 6, 7, 8, 9 and 10

Write pairs of twin primes between 40 and 80?

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NCERT TELUGU-PLAYING WITH NUMBERA-EXERCISE
  1. Verify whether 83568 is divisible by 11?

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  2. Write the factors 78?

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  3. Identify different co-primes between 50 and 70.

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  4. Find the prime factorisation of 72 by drawing a factor tree?

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  5. Find the HCF of 28, 42, 63 by prime factorisation method?

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  6. Find the HCF of 45, 60, 75 by continued division method.

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  7. Find LCM of the numbers 18, 24, 36 by prime factorisation method?

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  8. Find the LCM of the numbers 25, 30, 50 by the division method?

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

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

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

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

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

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

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

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

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

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  18. Write the common multiples of 12, 9?

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

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

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