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

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

Only one color, but not one size,
Stuck at the bottom, yet easily flies.
Present in sun, but not in rain,
Doing no harm, and feeling no pain.
What is it?

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

What goes up but never comes down?

There is a number which when you multiply by 3 and subtract 2 from the result, then the resulting number is the reverse of the actual number.

What is the smallest number that stands true on the statement?

Solve below popular number sequence
314 159 265 358 979 323 846 ?

Find the missing number in the sequence below:

Can you replace the question mark with the correct number in the below table sequence?

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?