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?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

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

While preparing the table for dinner, wife came up with an idea to tease his mathematician husband. She asked her husband to pick nine toothpicks and make ten without breaking any toothpick.

The husband was also smart and did it within seconds. How ?

I come in different shapes and sizes.
Parts of me are curved, other parts are straight.
You can put me anywhere you like,
but there is only one right place for me.
What am I?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

Which five letter word can be added at the end of below word to form a
valid word?

> Pin
> Check
> Boiling
> View

I am not alive, but I grow; I don't have lungs, but I need air; I don't have a mouth, but water kills me. What am I?

Alex is stranded on an island covered in forest.
One day, when the wind is blowing from the west, lightning strikes the west end of the island and sets fire to the forest. The fire is very violent, burning everything in its path, and without intervention the fire will burn the whole island, killing the man in the process.

There are cliffs around the island, so he cannot jump off.

How can the Alex survive the fire? (There are no buckets or any other means to put out the fire)

A man dies of old age on his 25 birthday. How is this possible?