What do you mean?

Hi,

This is what your code does:

it took out only the numbers with 5 at the end.

This is what it supposed to do:

return the count of all numbers except numbers with a 5 in it.

Example: 56 doesn't end with 5 but it contains 5.

Regards,

suic

Only exclude numbers with the digit "5".
There is nothing said about 10. :-)
Look at the 2nd example in the description.

You are mistaken - this has an interesting explanation: https://en.wikipedia.org/wiki/Parity_of_zero