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A list consists of the following pairs of numbers: 51, 53; 55,
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A list consists of the following pairs of numbers: 51, 53; 55,57; 59,61; 63,65; 67,69; 71,73 Categorize them as pairs of: co-primes           (ii)   primes         (iii)  composites

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A list consists of the following pairs of numbers: 51, 53; 55,57; 59,61; 63,65; 67,69; 71,73 Categorize them as pairs of: co-primes           (ii)   primes         (iii)  composites
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Practice questions from similar books

Question 1
 1)what is the HCF of 2 consecutive numbers (i)numbers (ii)even nos (iii)odd nos2)HCF of co-prime numbers 4 and 15 was found as follows by factorisation :   and  since there is no common prime factor, so HCF of 4 and 15 is 0. Is the answer correct? If not, what is the correct HCF?

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Question 2
Find the common factors of: 5, 15 and 25            (ii)  2, 6 and 8

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Question 3
Find the common factors of 56 and 120.

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Question 4
Write seven consecutive composite numbers less than 100 so that there is no prime number between them.

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Question Text
A list consists of the following pairs of numbers: 51, 53; 55,57; 59,61; 63,65; 67,69; 71,73 Categorize them as pairs of: co-primes           (ii)   primes         (iii)  composites