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Question

Find the HCF using Euclids Algorithm. 136,170,255.

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Solution

Consider the problem

Euclid division
a=bq+r
0r<b

First we find the HCF of 255 and 170

255=170(1)+85170=85(2)+0

So, HCF of 255 and 170 is 85

Now, find the HCF of 136 and 85

136=85(1)+5185=51(1)+3451=34(1)+1734=17(2)+0

HCF of 136 and 85 is 17

Therefore,
HCF(136,170,255)=17

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