# Which of the following pairs are co-primes ?

2
by Prami
options are 11,27 14,63 , 19,27 and 21 and 84

2014-11-14T16:23:11+05:30

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Two natural numbers are called co-prime, if they have no common factor other than 1 for eg 2 and 3 , 5 and 7,10 and 21 hope this ans would help u
plzzz mark it at best if u find it correct
options is 11,27 and 14,63 and 18,27 and 21, 84
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these options given in this question
2014-11-14T16:29:13+05:30

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Co prime numbers have no other common factor except 1
Eg. 5,7
21,32
11, 13 etc

So if you find the HCF (Highest common factor) And when you can not divide any more with any common facor and you can only divide them with 1 those are called COPRIME NUMBERS with LCM also the same thing happens but a bit different ( LOWEST COMMON MULTIPLE)