What kind of band never plays music?

When Jack was six years old he hammered a nail into his favourite tree to mark his height. Ten years later at age sixteen, Jack returned to see how much higher the nail was. If the tree grew by five centimetres each year, how much higher would the nail be?

Using eight eights and addition only, can you make 1000?

What number comes next in this sequence:
7 8 5 5 3 4 4 _

Replace the question mark with the correct number in below Picture:

what does this below rebus represent identXQQQQQME

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

Pronounced as one letter,
And written with three,
Two letters there are,
And two only in me.
I am double, I am single,
I am black blue and grey,
I am read from both ends,
And the same either way.

When does a USA Potato change its nationality?

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