What is wrong in the below Picture?

Can you make the below equation true by using any three numbers from "1, 3, 5, 7, 9, 11, 13 and 15"?

( ) + ( ) + ( ) = 30

What will you call your mother's brother's brother-in-law?

Can you find the ages of a son, father and grandfather based on the following facts?
The sum of the ages of grandfather, father and son is 140 years.
The age of the son in months is the same as the grandfather in years.
The age of the son in days is the same as the father in weeks.

Remove two matchsticks to make the below equation correct.

You’re out on the water and see a boat filled with people. You look away for a second and look back again, but this time you don’t see a single person on the boat. Why? Hint: The boat did not sink.

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

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

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?

Your mother’s brother’s only brother-in-law is asleep on your couch. Who is asleep on your couch?