# Best difficult riddles

## Number 45

Can you write number 45 using only the number 4?
44+44/44
79.06 %

## Runs forever, but never moves at all

This old one runs forever, but never moves at all. He has not lungs nor throat, but still a mighty roaring call. What is it?
A waterfall.
79.05 %

## Really hard algebra puzzle

2+3=8, 3+7=27, 4+5=32, 5+8=60, 6+7=72, 7+8=? Solve it?
98 2+3=2*[3+(2-1)]=8 3+7=3*[7+(3-1)]=27 4+5=4*[5+(4-1)]=32 5+8=5*[8+(5-1)]=60 6+7=6*[7+(6-1)]=72 therefore 7+8=7*[8+(7-1)]=98 x+y=x[y+(x-1)]=x^2+xy-x
78.92 %

## Cross a kangaroo and a elephant

What do you get if you cross a kangaroo and a elephant?
Big holes all over Australia.
78.55 %
funny

## Giant chocolate bar

What did the space man say when he set foot on a giant chocolate bar?
I have just set foot on Mars.
78.22 %

## The smallest number

Which is the smallest number that you can write using all the vowels exactly once?
fIvE thOUsAnd (5000).
78.22 %
funny

## 6 afraid of 7

Why is 6 afraid of 7?
Because seven was hungry and 'seven ate nine' (7, 8, 9).
78.06 %

## Hat to the scarf

What did the hat say to the scarf?
You hang around, I'll go ahead.
77.76 %

## Oranges

How do you divide 20 oranges equally to 11 girls? No one gets more and no one gets less. All 11 girls should receive equal portions. How?
Juice the oranges and serve the equal quantity of orange juice.
77.76 %