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The prime triplet and co-prime is ......

The prime triplet and co-prime is ............

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Co-primes

The HCF of two co-primes is

Co-prime numbers is a set of numbers which have 1 as their .......................

The LCM of two co-prime numbers is their .

HCF of two co-prime numbers is:

The least common multiple of two co-primes is _______

What are co-primes ? Give examples of five pairs of co-primes . Are co-primes always primes ? If no.illustrate your answer by an example .

|(bc,bcprime+bprime c, bprime c prime),(ca,ca prime+c prime a,c prime a prime),(ab, ab prime+a prime b,a prime b prime)| is equal to

RD SHARMA-PLAYING WITH NUMBERS-All Questions
  1. Two perfect numbers are ............ and ............

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  2. The HCF of two consecutive odd numbers is ............

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  3. The prime triplet and co-prime is ............

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  4. The greatest five digit number exactly divisible by 9 and 13 is 999...

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  5. From the set {2, 3, 4, 5, 6, 7, 8, 9}, how many pairs of co-primes can...

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  6. If the number 2345 of 60b is exactly divisible by 3 and 5, then the...

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  7. The HCF of 100 and 101 is 10100          (b)  1001        (c)  1...

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  8. The greatest four digit number which when divided by 18 and 12 leav...

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  9. The GCD of two numbers is 17 and their LCM is 765. How many pairs o...

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  10. The number of factors of 1080 is 32           (b)   28           (c...

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  11. The HCF of first 100 natural numbers is 2        (b)  100        (c...

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  12. The least number exactly divisible by 36 and 24 is 144         (...

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  13. Find the HCF of all natural numbers from 200 to 478

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  14. If x is prime, y is a composite number such that x+y=240 and their LCM...

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  15. The LCM of two numbers is 1024 and one of them is a prime number, F...

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  16. The GCD of two numbers is 4 and their LCM is 400. How many pairs of va...

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  17. Find the greatest number that can divide 101 and 115 leaving remain...

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  18. Find the least three digit number which when divided by 20, 30, 40 ...

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  19. Find the largest number that divides 59 and 54 leaving remainders 3...

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  20. Can two numbers have 12 as their HCF and 512 as their LCM? Justify ...

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