What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

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?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?

What month of the year has 28 days?

I have branches, but no fruit, trunk or leaves. What am I?

Can you replace the question mark with the correct number in the below table sequence?

A 52% bias toss for head using the 51% tail bias coin was done to obtain a fair result.

Can you find how bias is the floor in this case?

John was piloting a plane behind a car but was never able to overtake it. Why?

You want to boil a two-minute egg. If you only have a three-minute timer (hourglass), a four-minute timer and a five-minute timer, how can you boil the egg for only two minutes?