Replace the question mark with the correct number below.

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?

There are seven sisters in a house in a village where there is no electricity or any gadget.

Sister-1: Reading Novel
Sister-2: Cooking
Sister-3: Playing Chess
Sister-4: Playing Sudoku
Sister-5: Washing clothes
Sister-6: Gardening

what is Sister-7 doing ?

Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?

I have branches, but no fruit, trunk or leaves. What am I?

How can you drop a raw egg from a height onto a concrete floor without cracking it?

John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

I have a mouth but I don't eat.
I have a bank but have no money.
I have a bed but i dont sleep.
I wave but have no hands.

Who Am I ?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

Our product and our sum always give the same answer. Who are we?