A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

Divide 110 into two parts so that one will be 150 per cent of the other. What are the 2 numbers?

I’m orange, I wear a green hat and I sound like a parrot. What am I?

I am a type of food that is often found in the fridge and can be white in colour. What I am?
Hint 1: I am a dairy product.
Hint 2: You can spread me on the bread.

What number divided by 4 is the same as that number minus 4?

Can you fill the blank with the correct number?

6 30 870 756030 _____

Can you spot the man between the coffee bean in the picture below ?

I possess two wires. Both of them have an inconstant thickness but both of them burn completely in sixty minutes. The problem is that I want to measure forty-five minutes while using these two wires.

How can I measure if cutting the wire in half is not possible due to non-homogeneous construction?

Count the squares in the matchstick puzzle below?

Samuel was out for a walk when it started to rain. He did not have an umbrella and he wasn't wearing a hat. His clothes were soaked, yet not a single hair on his head got wet. How could this happen?