I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?

What is common among 11, 69, and 88?

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.

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?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

Can you find a five letter word that is left with only two letters if one is removed?

How could a baby fall out of a twenty-story building onto the ground and live?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

No one wants to have it, but if one got it, he does not want to lose it. What is It?