Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

My first is in chocolate but not in ham. My second is in cake and also in jam. My third at tea time is easily found. Altogether, this is a friend who is often around. What is it?

I look at you, you look at me, I raise my right, you raise your left. What am I?

Solve the rebus riddle in the picture below.

Can you divide the below-given shape into four equal and identical pieces?

Your job is to measure 45 minutes if you have only two cords and matches to light the cords.

1. The two cords are twisted from various materials, so their different segments can burn at different rates.
2. Each cord burns from end to end in exactly one hour.

Describe your way of measuring the 45 minutes.

What English word has three consecutive double letters?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

What does this simple rebus mean?

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