Can you count the number of triangles in the given figure?

There are 2 sand hourglasses.

The small one can measure 5 hours and the large one can measure 7 hours.

How can we measure 16 hours with 2 sand hourglasses running together ?

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

You are in a land where thirty men and two women were dressed in classic black and white dresses.
They begin to fight as soon as any of them move.

Where are you?

Can you circle exactly four of these numbers such that the total is twelve?

1 6 1
6 1 6
1 6 1
6 1 6

I am the fastest animal but cannot climb the tree. What am I?

What is the word or phrase?

What has many keys but can’t open a single lock?

Why 1729 is a magic number? Answer Logically.

What number comes next in the series?

5 15 5 18 5 24 14 20 _