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?

You have to fill the below given grid in a manner that every row and column contains the digits 1 to 6. Also, make sure that the squares that are connected with each other must contains the same digit.

I have a big mouth and I am also quite loud! I am NOT a gossip but I do get involved with everyone's dirty business.

You board a train. The train will have to enter a tunnel soon. You are claustrophobic. Which place is the best for you to sit?

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

How high do you have to count before you use the letter “a” in the English spelling of the whole number?

What do you call a fish without an eye?

Can you solve the photo plexer logic ?

Spot 5 differences in two Christmas tree below: