What is common among 11, 69, and 88?

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

Peter wakes up daily to pick up his cycle and crosses the border between Spain and France daily with a bag on his shoulder. He is investigated daily by the officials but they don't find anything suspicious.

If we tell you that he is smuggling something what would it be?

Cristina was born in 1888. She just had her 30th birthday today how did that happen?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

In a football game, Christina defeated Teresa by 2 - 0 but no man from either side scored. How can this be possible?

If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?

I was speeding and ran through a stop sign, yet two traffic officers who were there do nothing about it.

why?

A boy was at a carnival and went to a booth where a man said to the boy, "If I write your exact weight on this piece of paper then you have to give me $50, but if I cannot, I will pay you $50." The boy looked around and saw no scale so he agrees, thinking no matter what the carny writes he'll just say he weighs more or less. In the end the boy ended up paying the man $50. How did the man win the bet?

Assume there are approximately 5,000,000,000 (5 billion) people on Earth. What would you estimate to be the result, if you multiply together the number of fingers on every person's left hand? (For the purposes of this exercise, thumbs count as fingers, for five fingers per hand.) If you cannot estimate the number then try to guess how long the number would be.