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

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

What has one eye, but can’t see?

Find the hidden tiger in the given optical illusion ?

I cry without having a voice.
I fly without having wings.
I bite without having teeth.
I whisper without a mouth.

Who am I?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

Can you place six matchsticks in a manner that each of the matchsticks is in touch with the other five matchsticks?

Can you find the mistake in the below statement?

A man calls his dog from the opposite side of a river. The dog crosses the river without a bridge or a boat and manages to not get wet. How is this possible?

What is more useful when it is broken?