How can you make number one disappear by adding something to it?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

Can you place six X (crosses) in below board without making three in a row in any way ?

A red house is made out of red bricks. A yellow house is made out of yellow bricks. And, a blue house is made out of blue bricks. So, what is a greenhouse made of?

In a family supper, a grandfather, a grandmother, two fathers, two mothers, four children, three grandchildren, one brother, two sisters, two sons, two daughters, one daughter-in-law, and one mother-in-law need to sit at a table.

There are only seven chairs available at the place. How many more chairs do they have to borrow so that everyone can sit down together for the suppers if everybody requires a separate chair?

You knock a Table over in the library, and suddenly 20 eyes are looking at you.

This is a picture puzzle. You have to guess the name of the movie that can be related to the picture.

If Rajina's daughter is my daughter's mom, who am I to Rajina?

What Deficiency does the below rebus represent?

VIT_MIN

Two guards were guarding the camp.Guard-1 was looking towards the south to make sure no threat is coming from the road.Guard-2 was looking at the north to make sure no threat is coming from the top. Suddenly Guard-1 ask the Guard-2 why he is smiling?How Guard-1 knows that Guard-2 is smiling?