Why is 6 afraid of 7?

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?

The picture shows the dice results in each couple of throws. If they are actually following a pattern, can you find out the missing one?

What comes
Once in a Year
Twice in a Month
4 times in a Week
6 times in a Day

What has one letter and starts with an E?

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?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

A generous owner of a company decided to give a bonus of $45 to every man and $60 to every woman on his birthday. But only one-ninth of the men and one-twelfth of the women were present to take the bonus.

Can you calculate the amount of money the owner spent if there were 3552 employees?

There is a box. The area of its top is 240 square units, the area of the front is 300 square units and the area of the end is 180 square units.

Can you calculate the dimensions of this box with the given data?

What is the coolest letter in the alphabet?