Complete the table series riddle by finding the number that can replace "??".

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 can see it everyday, But cannot touch it at will. What is it?

Cristina leaves home and then she makes exactly 3 left turns and returns home where she found 2 girls wearing the mask.

Who are these two masked girls?

The more you take me, the more you leave me behind.
Who Am I?

Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

The teacher told the student that if he told a lie then he will be expelled from school and if he told the truth then he still is expelled from school.

What can a student say to prevent his being expelled from school?

Count the number of triangles in the given picture.

What does the below mathematical rebus mean?

What do you think with the below Picture ?