What does this rebus riddle means ?

Can you find out the remainder when 3^300 is divided by 5?

Can you fill the blank with the correct number?

6 30 870 756030 _____

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

Spot what is wrong here in below Picture?

Can you replace the question mark with the correct number?

If a wheel has 54 spokes, how many spaces are there between the spokes?

Consider all the numbers between 1 and 1 million. Among all these numbers, there is something very special about the number 8 and the number 2202. What is it?

Suppose you are sitting in an interview and the interviewee asks you an aptitude question.

You have three buckets with a capacity of 4 litres, 8 litres and 10 litres and you have a large tank of water. Now you have to measure 3 litres of water precisely using those buckets. How will you do it?

Who is generally closer to the kids, mom or dad?

(it's a funny riddle)