It’s 27 to 11 (Official clock system).

10:33

It’s 27 to 11.

Correct answer

10:34

It’s 26 to 11.

Error: 1 minute later

09:51

It’s 9 to 10.

Error: read minutes starting from hour markings and adding minutes

07:50

It’s 10 to 8.

Error: confuse hour and minute hands