Prove that the below maths equation is true.

8 + 8 = 91

Analyze and find the missing item in the sequence:
16, 06, 68, 88, __, 98

A man dies of old age on his 25 birthday. How is this possible?

You were playing ping pong with your friend. Suddenly the ball fell into a narrow metal pipe that was imbedded in the concrete surface of the floor one foot deep. Now you don't have any other ball and you desperately want to take it out and play. You and your friend have your shoelaces, your tennis paddle and a plastic water bottle. However, the bottle cannot fit into the pipe.

How will you take the ball out?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

Can you find out which triangle will have a bigger area among the following?
1. A triangle with sides 300, 400 and 500
2. A triangle with sides 300, 400 and 700

Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

Here is what you have to do. You have to throw a ball as hard as you can but it must return back to you even if it does not bounce at anything. Also, you have nothing attached to the ball. There is no one on the other end to catch that ball and throw it back at you.

How will you do it?

Can you solve this picture maths equation?