Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

Two boys wish to cross a river. The only way to get to the other side is by boat, but that boat can only take one boy at a time. The boat cannot return on its own, there are no ropes or similar tricks, yet both boys manage to cross using the boat.

How?

Can you find a number that lies one third of the distance between 1/3 and 2/3?

You have 10 balls with you. A friend of yours out of nowhere asks you to place those ten balls in five lines such that each of the lines has exactly 4 balls on them. He needs to check your intelligence. Prove him by doing the task.

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?

How can I get the answer 24 by only using the numbers 8,8,3,3?

You can use the main signs add, subtract multiply and divide.

You have to put a letter on the following to make it a meaningful word. The only challenge is that you can't use 'E'.

S E Q U E N C _

What does this simple rebus mean?

In particular commonwealth games, a female participant won silver and gold medals for a single event.

How can this be possible?

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?