A man dies of old age on his 25 birthday. How is this possible?

John was running from 40 thieves. John has got 3 gold boxes which weigh as 4kg, 2kg, and 1kg respectively. A witty man asked John to stay with him for seven days in exchange for 1kg gold per day. John needs to stay there for seven days and also do not want to give the witty man any advance. How can John pay for his seven days stay?

You are an expert on paranormal activity and have been hired to locate a spirit haunting an old resort hotel. Strong signs indicate that the spirit lies behind one of four doors. The inscriptions on each door read as follows:

Door A: It's behind B or C
Door B: Its behind A or D
Door C: It's in here
Door D: It's not in here

Your psychic powers have told you three of the inscriptions are false, and one is true. Behind which door will you find the spirit?

What is the largest number you can write with just 3 digits?

Get total of 120 by using five zeros 0,0,0,0,0 and any one mathematical operator.
Do you ?

There is an ancient kingdom where every married woman keeps information regarding the fidelity of other men. However, what they don't know is the fidelity of their own husbands. Also, there is an ancient belief that they don't tell each other about the fidelity of their husbands.

On a certain day, the queen of the kingdom declares that she has identified at least one unfaithful man in the kingdom. She allows the wives to identify and gives them authority to kill their husbands if they are unfaithful at midnight.

How will the wives manage it?

Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?

If eleven plus two equals one, what does nine plus five equal?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"