Question 25

What is the HCF of 16, 72 and 28 ?

Solution

facotors of 16 ,72, 28

$$16=\ 2\times\ 2\times\ 2\times\ 2$$

$$72=\ 2\times\ 2\times\ 3\times\ 3$$

$$28=\ 2\times\ 2\times\ 7$$

comman factor =$$\ 2\times\ 2$$=4

Hence option 'B' is correct.

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