Answer:
4
Step-by-step explanation:
1) drawing a line straight
2) drawing 2 lines diagonally
3) drawing 1 line like this -----
2 IS THE ONLY EVEN PRIME NUMBER a prime number can only be divided by 1 or itself. 4 is a composite and 5 is a prime hope this helps you.
30,77,55,71,19,40,10,5,7,6