What do you see in the given picture?

How many triangles are there on the puzzle below?

Solve below popular number sequence
314 159 265 358 979 323 846 ?

What phrase is represented by the Rebus

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

In a university, a professor gave a set of three problems to the three brilliant students of his class. See the image for the questions.

I have two sand hourglasses:
1. A 7 minute one and
2. An 11-minute one.

Using just these 2 sand hourglasses, how can I measure time as 15 minutes?

Can you find out which triangle will have a bigger area among the following?
1. A triangle with sides 300, 400 and 500
2. A triangle with sides 300, 400 and 700

When is the top of a mountain similar to a savings account?

One night, Louis and Adam were sitting together. Adam was watching a movie while his wife Louis was reading a mystery book. Suddenly the power went out and Adam decided to go to bed, but strangely Louis kept on reading. There was no artificial light around, so Louis kept on reading. How come?