You are mixing a mixture of cement and Sand with five gallons of water. You have a garden hose giving you all the water you need. The problem is that you only have a four-gallon bucket and a seven-gallon bucket and neither has graduation marks. Find a method to measure five gallons.

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

In the city of Brain Teasers, 5% of people do not list their phone numbers. Now if we select random 100 people from the phone directory, then how many people selected will have unlisted phone numbers?

What breaks yet never falls, and what falls yet never breaks?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

A car meter reading shows 72927 miles a palindromic number.
what is the minimum number of miles you would need to travel to see another palindromic number on the car meter reading?

Transform the word THINK into BRAIN while changing only one letter at a time in a manner that each of the word in the process is a real word!!!

Find the number of squares in the below-given picture.

Do you know who was buried in John's tomb?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?