Question

Show that 20 and 21 are co-primes. please urgent ​

Answer 1

Answer:

20 and 21 are co prime because they have 1 as common factor.

Step-by-step explanation:

firstly find HCF of both 20 and 21.

then you will find that there is no common factor of 20 and 21 except 1.

so they will be co prime.

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Answer 2

Answer:

No 20 and 21 are not co prime