Answer:
b
Step-by-step explanation:
Answer:
1,3,21,23,35 odd
Step-by-step explanation:
those aren't prime
Answer:
I think it's C, x-y-8=0
Step-by-step explanation:
Answer:
A, E
Step-by-step explanation:
You have to look for the ordered pairs where x (the first digit) doesn't repeat. that's a + e