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My co-worker Erich is very odd. He only likes numbers that are divisible by 5. How many different last digits are possible in numbers that Erich likes?

Respuesta :

taniafki11
Only 5 and 0 can be there, so there is only 2 possible last digits
Athenalsun

Solution:

A number is divisible by 5 if and only if it ends in 0 or 5, so there are only 2 possible last digits.