What does this Rebus Picture mean?

Can you solve the below algebraic mathematical equation?

(J+O+I+N+T)3 = JOINT

A man stands on one side of a river, his dog on the other. The man calls his dog, who immediately crosses the river without getting wet and without using a bridge or a boat. How did the dog do it?

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.

When is the top of a mountain similar to a savings account?

Can you solve the below tricky visual equation?

I am a three digit number.
My tens digit is five more than my ones digit.
My hundreds digit is eight less than my tens digit.
What number am I?

Before the start of the car race, John and Jacob have the same amount of fuel in their car. With this fuel, John can drive for 4 hours while Jacob can drive five hours.
After a time they realize that the amount of fuel left in John's car is 1/4th of the fuel in Jacob's.

For how long they are racing?

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes