During which month do people sleep the least?

I’m tall when I’m young, and I’m short when I’m old. What am I?

I make two people out of one. What am I?

I have a clock(12-hour format) and both the needles of the clock overlap at 12:00.
After how much time, they will overlap again?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

O_er_t_o_

Complete the missing letters of the given word.

Samuel was out for a walk when it started to rain. He did not have an umbrella and he wasn't wearing a hat. His clothes were soaked, yet not a single hair on his head got wet. How could this happen?

If you say my name, I will no longer exist. What am I?

The more you take me, the more you leave me behind.
Who Am I?

How can you write nineteen in a manner that if we take out one, it becomes twenty?