There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

If eleven plus two equals one, what does nine plus five equal?

What is the centre of gravity?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

Find the mistake in the below maths equations

A = 2
A(A-1) = 2(A-1)
A2-A = 2A-2
A2-2A = A-2
A(A-2) = A-2
A = 1

In the picture given below, can you find out which digit will take place of the question mark?

What 5-letter word typed in all capital letters can be read the same upside down?

Three brothers Jacob, John, and James live in Mexico City. The product of the ages of these brothers is 175. Jacob and John are twins. How old is James?

A clock loses 10 minutes each hour. If the clock is set correctly at noon, what time is it when it reads 3 PM?

In the Thar desert, 3 men found a big 24L Jar is full of water. Since there is a shortage of water so they decided to distribute the water among themselves such that they all have equal amounts of it. But they only have a 13L, a 5L and an 11-litre Jar.

How do they do it?