Question

A clock is hung on a wall has marks instead of number on its dial. On the opposite wall there is a mirror and image of mirror in the clock is read and it indicates the time as 8:20.The time in the clock is__________

Answer 1

1. A clock hung on a wall has marks instead of numbers on its dial. On the opposite wall, there is a mirror, and the image of the mirror in the clock is read and it indicates the time as 8:20.
2. When the clock shows $8:20$, the hour's hand will not be on $8$, it will be more than $8$.
3. When it is seen from the mirror, it will be less than $4$i.e. it will be $3$
4. Minutes hand on $20$ minutes will be shown as $40$ minutes
5. Hence, the real-time on the clock is $3:40$.