It’s 11 to 6 (Official clock system).

05:49

It’s 11 to 6.

Correct answer

05:50

It’s 10 to 6.

Error: 1 minute later

04:51

It’s 9 to 5.

Error: read minutes starting from hour markings and adding minutes

10:25

It’s 25 past 10.

Error: confuse hour and minute hands