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

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?

Find the next number in the sequence

1, 2, 6, 21, 88, __?

You have two strings whose only known property is that when you light one end of either string it takes exactly one hour to burn. The rate at which the strings will burn is completely random and each string is different.

How do you measure 45 minutes?

A man has a barrel filled with oil that weighs 100 pounds, and then he puts something into it. Now the barrel weighs less than 100 pounds. What did he put in the barrel?

Assume the given figure to be a delicious doughnut. Yes, now you can concentrate more on the puzzle. So you have this delicious doughnut in your refrigerator when your friends come knocking at the door. There are eight of them. Now you have to make three cuts in this doughnut so that each one of you nine people can enjoy a piece of it. Neither you nor your friends would mind the size of their piece as long as they are getting it. How will you do it?

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

Can you count the number of lines in the below picture?

A four-digit number (not beginning with 0) can be represented by ABCD. There is one number such that ABCD=A^B*C^D, where A^B means A raised to the B power. Can you find it?

Count the number of balls in picture below: