In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

The more of this there is, the less you see. What is it?

What will you call your mother's brother's brother-in-law?

I’m tall when I’m young, and I’m short when I’m old. What am I?

Solve the following series:
AZ, GT, MN, __, YB

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

What number comes next in the series?

5 15 5 18 5 24 14 20 _

Given below is simple addition with a defined pattern pattern:
7 + 7 = 2
8 + 8 = 4
8 + 5 = 1
6 + 9 = 3
10 + 11 = 9

Can you analyze the pattern and find out the answer for:

4 + 9 = ?

What's the only room from which no one can enter or leave

Accidentally, two trains are running in the opposite direction and enter a tunnel that is 200 miles long. A supersonic bird that has fled the lab and taken shelter in the tunnel starts flying from one train towards the other at a speed of 1000 mph. As soon as it reaches the second train, he starts flying back to avoid collision and meets the first train again at the other end. The bird keeps flying to and fro till the trains collide with each other.

What is the total distance that the supersonic bird has traveled till the trains collided?