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?

As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.

What is full of holes but still holds water?

I am quite hot but become too cold if you remove the first two letters. What am I?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

It's a protector.
It sits on a bridge.
One individual can see directly through it, while others wonder what it hides.

What is it?

There are three houses in a straight row. One is red, one is blue, and one is white. The red house is left of the middle. The blue house is right of the middle. Where's the white house?

What goes through cities and fields, but never moves?

The cream is heavier than Milk. True or False?

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?