It’s 10 to 6 (Official clock system).

05:50

It’s 10 to 6.

Correct answer

06:10

It’s 10 past 6.

Error: mirror minute hand about the vertical axis

10:05

It’s 5 past 10.

Error: confuse hour and minute hands and read as hours with ‘past’ or ‘to’

10:25

It’s 25 past 10.

Error: confuse hour and minute hands