There are forty elephants and they have forty-fore heads. How can this be possible?

What has many teeth, but cannot bite?

A maths symbol is hidden in the below Bar Graph. Can you decipher it?

A donkey is behind another donkey
I'm behind that second donkey
But there is a whole nation behind me

It is a murder you can describe in a word.

Can you write down eight eights so that they add up to one thousand?

You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?

What numbers should go on the bottom line?
3 6 9 15
8 2 10 12
11 8 19 27
19 10 29 39
? ? ? ?

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

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

Use the digits from 1 up to 9 and make 100.

Follow the rules.
=> Each digit should be used only once.
=> You can only use addition.
=> For making a number, two single digits can be combined (for example, 4 and 2 can be combined to form 42 or 24)
=> A fraction can also be made by combining the two single digits (for example, 4 and 2 can be combined to form 4/2 or 2/4)

Question: how can we do this?