What does does this rebus picture means ?

You order chicken wings at KFC in the boxes of 6, 9 and 20. What is the largest number of wings that you cannot obtain by buying in any combination of the boxes?

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

A Scientist was fifty years old in the year 2000 but he was forty years old in the year 2010. How can this be possible?

PS: It has a logical answer.

If a boy blows 18 bubbles,
Then pops 6 eats 7 and then
He pops 5 and blows 1.
How many are left?

A maths symbol is hidden in the below Bar Graph. Can you decipher it?

By what process could you make a 'Tea-Table' into food?

I have eight fingers and two thumbs but I do not live. What Am I?

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?

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10