Answer :
First, you must know the definition of prime number which is any number above one that has no factors other than 1 and itself (examples: 2,3,5,7,etc) and composite has the opposite meaning
So look at the factors of 68:
1,2,4,17,34,68
It has factors other than 1 and itself
So that means 68 is a composite number
So look at the factors of 68:
1,2,4,17,34,68
It has factors other than 1 and itself
So that means 68 is a composite number
The number 68 is a composite number because 68 can be multiplied by 2 and 34
and 4 and 17
and 4 and 17