If 1+9+8=1, what is 2+8+9?

How can you take 2 from 5 and leave 4?

John is the son of Jacob.
So,
Jacob is the_____of John's father?

I make two people out of one. What am I?

If I put in one canary per cage, I have one bird too many. If I put in two canaries per cage, I have one cage too many. How many cages and canaries do I have?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

I shave every day, but my beard stays the same. What am I?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

I get hot but I never sweat,
I cook food but I am not a chef,
I have a door but you can't enter me,
I have a light but I am not a lamp.
Who am I?

A pregnant woman is preparing to name her seventh child. Her children's names so far are Dominique, Regis, Michelle, Fawn, Sophie, and Lara. What will she name her next child -- Jessica, Katie, Abby or Tilly?