What is more useful when it is broken?

Which English verb becomes past tense just by rearranging the letters?

What am I?

Rearrange the letters in "new door" to make one word.

What is the longest word in the dictionary?

How old is your son? asked a man to his neighbour. My son is five times as old as my daughter and my wife is five times as old as my son. I am twice as old as my wife whereas my grandmother, who is celebrating her eighty-first birthday is as old as all of us put together.

How old is the man's son ?

Divide 110 into two parts so that one will be 150 per cent of the other. What are the 2 numbers?

Manish and Manoj play 5 games of chess.
Both Manish and Manoj win the exact same number of games. There is no tie at all.

How?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

An evil man kidnapped someone and made them take one of two pills. One was harmless, but the other was poisonous. Whichever pill the victim took, the kidnapper took the other one. The victim took their pill with water and died. The kidnapper survived. How did the kidnapper get the harmless pill?