Best Answer

Well, if you think about it, a prime can never end in 4, because then it would be divisible by 2.

So the only numbers you need to check are 41, 43, 45, 47, and 49. Can you take it from there?

User Avatar

Wiki User

11y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: How many 4's are used to write all two digit prime numbers?
Write your answer...
Still have questions?
magnify glass
Related questions