Find the highest common factor of $$2079 and $$162.

Sure, here are the steps to find the highest common factor (HCF) of 2079 and 162:

Step 1: Write down the prime factors of each number.

• The prime factors of 2079 are: 3, 3, 3, 7, 11.
• The prime factors of 162 are: 2, 3, 3, 3, 3.

Step 2: Identify the common prime factors.

• The common prime factors are: 3, 3, 3.

Step 3: Multiply the common prime factors together to find the HCF.

• The HCF is: 3 * 3 * 3 = 27.

So, the highest common factor of 2079 and 162 is 27.