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

Can you count the number of quadrilaterals in the picture below?

Why Wine Glass Stem is so long?

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

If your uncle’s sister is not your aunt, what relation is she to you?

Can you fill the blank with the correct number?

6 30 870 756030 _____

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

I am a white box having no key or lid.
Yet there is a golden treasure inside it.

What Am I?

Move three sticks of the spiral below to form a square.

There was a blind man. He had four socks in his drawer either black or white. He opened it and took out two socks. Now the probability that it was a pair of white socks is 1/2.

Can you find out the probability that he had taken out a pair of black socks ?