Can you replace the question mark with the correct letter?

6 + 6 + 6 = N
7 + 7 + 7 = E
8 + 8 + 8 = R
0 + 0 + 0 = ?

What English word has three consecutive double letters?

There are 3 apples in the basket and you take away 2. How many apples do you have now?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

A sundial has the fewest moving parts of any timepiece. Which has the most?

You have three orange, two pink and five purple balls in the drawer beside your bed. There is no electricity and the room is entirely dark. How many balls must you take out to ensure at least one ball of each colour at least?

Look at the picture and find out which square is not linked with any of the other squares.

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?

How can you make number one disappear by adding something to it?