A girl is twice as old as her brother and half as old as her father. In 50 years, her brother will be half as old as his father. How old is the daughter now?

In the picture given below, can you find out which digit will take place of the question mark?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

The pound is not a finish.

We are sharing a few instructions below, which you have to use in any suitable order to modify the above sentence such that the end sentence is a scientific fact.

- Eliminate a letter and supplement another in its place.
- Take away one word.
- Remove one letter from one word.
- Get rid of two letters from one word.
- Swap a word with its antonym.

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

Replace all '*' with digits 1, 2, 3, 4, 5 and 6 to make below statement true.

* *
x *
=====
* * *

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

How many words can a pen with half refill write?

A sundial has the fewest moving parts of any timepiece. Which has the most?

What can you hold in your right hand, but never in your left hand?