They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

If eleven plus two equals one, what does nine plus five equal?

It belongs to you, but other people use it more than you do. What is it?

I am a normal creature, but I have five hands. I can even have more but even then I will be considered normal.

Who am I?

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

In a science lab, a petri dish hosts a healthy colony of yeast for an experiment. Now every minute, all the yeast cells divide into two. At noon, there was just a single cell of yeast and at 1:22, the Petri dish was half full. Can you calculate when the dish will be full of yeast?

Find the missing letter in the last circle logically in the given below picture.

I welcome the day with a show of light, I stealthily came here in the night. I bathe the earthy stuff at dawn, But by noon, alas! I'm gone.

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?