It’s 6 to 4 (Official clock system).

03:54

It’s 6 to 4.

Correct answer

03:55

It’s 5 to 4.

Error: 1 minute later

02:50

It’s 10 to 3.

Error: read minutes starting from hour markings and adding minutes

11:15

It’s a quarter past 11.

Error: confuse hour and minute hands