Test of logic. Maximum score is 30.
Comments under test:

Polina Grigorieva
Strangely, my boyfriend says I have no logic at all, but judging by the test, it’s not.)

Dmitry Veremko
No right grandma can't answer 30 I don't believe or were sponges!!!!!! I am 17

Julia of the Sun
Not surprisingly, with such "knowledge" of spelling well and logic can suffer.