What has hands, but can’t clap?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

Sally lives in a place where six months of the year is mild summer and the temperature drops significantly the other six months. She owns a lake where there is a small island. She wants to build a house on the island and needs to get materials there. She doesn’t have a boat, plane, or anything to transport them to the island. How does Sally solve this problem?

Teacher ask the student

'Why are you standing on that chair in music class ?'.

what did student replied ?

How many triangles can you find in this given picture?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

Can you identify if it's a murder or a suicide ?

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

How many people must be gathered together in a room, before you can be certain that there is a greater than 50/50 chance that at least two of them have the same birthday?

What's the best place to go shopping in the ocean?