Below, you will find the mathematical proof that 10 equals 9.99999?. But is that possible or there is something wrong about it? Can you find the error?

x = 9.999999...
10x = 99.999999...
10x - x = 90
9x = 90
x = 10

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

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.

I always drive my customer away.

Who am I?

Can you find out the missing number in the grid?

What is wrong in the below Picture?

Can you count the number of squares in the figure below?

If two's company, and three's a crowd, then whats four and five ?

Find the last number in the series below:

voN luJ yaM raM ---

There is an exact a week gap between Christmas and New Year. Hence, It is obvious that the new year that comes right after Christmas comes on the same day of the week.

A Strange thing happened in the Year 1777. Christmas occurs on Wednesday and New Year on Monday. How is that possible?