Answer:
3,768,688 different ways
Step-by-step explanation:
The number of ways to select x elements from a group of n elements is calculated as

In this case, we want to select 6 parents from a group of 24 and select 2 teachers from the 8 teachers, so

Therefore, the groups can be made in 3,768,688 different ways because
24C6 x 8C2 = 134,596 x 28 = 3,768,688