# Summary

Complete above steps to enable this content

In this chapter, we have studied the following points:

**The Fundamental Theorem of Arithmetic :**

1.Every composite number can be expressed(factorised) as a product of

2.If p is a prime and p divides

We have learnt to prove that

**NOTE FOR THE READER**

You have seen that : HCF(p,q,r) × LCM(p,q,r) ≠ p × q × r, where p, q, r are positive integers (see Example 8). However, the following results hold good for three numbers p, q and r :

LCM (p, q, r) =

HCF (p, q, r) =