Will bots pass such an arithmetic captcha?

Question

CAPTCHA

The user is prompted to evaluate the expression and enter a number.
I decided to try to make a captcha myself. How reliable will this be?

Answer 1

I am a robot. I didn’t pass%))) Well, that is, not immediately)))
This is me to the fact that there should be simple tasks. The most simple.

Answer 2

If they write individually for your site, they will pass.
She's not complicated.
If you are counting on some universal robots - so for them the slightest complication - and that's it, you've arrived.

Answer 3

"Indians" have been working as robots for a long time (regardless of nationality and country of residence). Their "knowledge" is added to the piggy bank of bots.
Therefore, it is much better (and easier to implement) to use question and answer than solving pictures and mathematics.