What number should come in place of the question mark below?

What do you call a fish without an eye?

Before Mount Everest was discovered, what was the highest mountain in the world?

There are three boxes which are labeled as Rs100, Rs150, and Rs200. One box contains two notes of Rs. 50. The second box contains one note of Rs50 and one note of Rs100 The third box contains two Rs. 100 notes. All boxes are labeled incorrectly.

What is the minimum number of boxes you must check in order to label all boxes correctly?

Identify The phrase in the picture.

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?

An octopus has 8 legs. A hippogriff has 6 legs and 2 pairs of wings. A sphinx has 6 legs and one pair of wings. Now we have all 3 kinds and a total of 18 insects in a cage. We have a total of 118 legs and 20 pairs of wings. How many insects do we have of each kind?

I shave every day, but my beard stays the same. What am I?

Which is heavier: a ton of bricks or a ton of feathers?

How many triangles are there on the puzzle below?