Question

A mirror is placed in front ofthe clock. The clock shows time 5:40. What will be its reflection in the mirror?

Answer 1

Figure 1 is the clock that shows time 5:40. On its left side, a mirror is placed and Fig. is the reflection figure of Fig.
Clearly, time seems to be 6:20. Short cut: Subtract 5:40 from 12, we get 6:20.