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 man and a dog were going down the street. The man rode, yet walked. What was the dog’s name?

As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.

Decode the movie name from the below picture?

I’m tall when I’m young, and I’m short when I’m old. What am I?

A Scientist was fifty years old in the year 2000 but he was forty years old in the year 2010. How can this be possible?

PS: It has a logical answer.

It's pretty hard to give up.
If you remove a part of it, you will be left with a bit.
Even if you remove another part, the bit still remains.
Remove one more and it still remains.

What is it?

Solve the below puzzle by replacing the question mark with the correct number.

3 6 12

4 8 16

5 10 ?

If "P" means "-", "Q" means "/", "R" means "+", and "S" means "*" then find the value of the following:

21 Q 7 R 9 S 10 P 13

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?