If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?

Once upon a time, there was a castle on a square island. The entire island was surrounded by a 14m wide trench. The Romans had wanted to invade the castle and had brought a few wooden planks along with them to facilitate themselves in crossing the moat. The planks were however found to be only 13m long.

The Romans still managed to cross the trench. How did they do it?

No matter how little or how much you use me, you change me every month. What am I?

What word is identified by the below rebus?

Your Your Your Your Your
Your Your Your Your Your

Three playing cards in a row. Can you name them with these clues? There is a two to the right of a king. A diamond will be found to the left of a spade. An ace is to the left of a heart. A heart is to the left of a spade. Now, identify all three cards.

I am a three digit number.
My tens digit is five more than my ones digit.
My hundreds digit is eight less than my tens digit.
What number am I?

What does below chemistry rebus means?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

A large container is kept in open under the rain. Every passing hour, the water collected inside the container becomes double what it was.

In ten hours, the container is filled completely. Can you calculate how long would it have taken to be filled in half?

They are three errirs in this question. Can you find them?