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From the following numbers identify diff...

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

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NCERT TELUGU-PLAYING WITH NUMBERA-EXERCISE
  1. Can you guess a prime number which when on reverseing its digits, give...

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  2. You know 311 is a prime number, Can you find the other two prime numbe...

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  3. From the following numbers identify different pairs of co-primes. 2, 3...

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  4. Write all the factors of the following numbers. 36,

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  5. Write all the factors of the following numbers23

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  6. Write all the factors of the following numbers 96

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  7. Write all the factors of the following numbers 115

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  8. Which of the following pairs are co-prime? (i)18 and 35, (ii) 216 and ...

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  9. Which of the following pairs are co-prime? (¡) 30 and 415, (ii) 17 and...

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  10. What is the greatest prime number between 1 and 20?

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  11. Find the prime and composite numbers between 10 and 30?

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  12. The numbers 17 and 71 are prime numbers. Both these numbers have same ...

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  13. Write three pairs of twin primes below 20?

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  14. Write two prime numbers whose product is 35?

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  15. Express 36 as the sum of two odd primes.

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  16. Write seven consecutive composite numbers less than 100.

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  17. Express 53 as the sum of three primes?

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  18. Write two prime numbers whose difference is 10?

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  19. Write three pairs of prime numbers less than 20 whose sum is divisible...

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  20. Write the prime factors of 28 and 36 through division method.

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