Which is heavier: a ton of bricks or a ton of feathers?

How can you take 2 from 5 and leave 4?

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?

Can you solve the below geography rebus by decoding the below rebus ?

Can you decipher these quotes by Albert Einstein?
Blf xzm mvevi hloev z kilyovn lm gsv ovevo lm dsrxs rg dzh xivzgvw.

Find the value of "a" by solving the maths equation in the picture below:

How can you make a TV, a bed, a dog, and a car liquid?

We have shown you a regular water barrel as below. Without using any measuring device can you check if the barrel is more than half-filled or less than half-filled?

What breaks yet never falls, and what falls yet never breaks?

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?