How many times can you subtract the number two from the number fifty?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

If it took eight men ten hours to build a wall, how long would it take four men to build it?

What is at the end of a rainbow?

Which letter of the alphabet has the most water?

John is pretty weird. He likes toffees but hates chocolates. He loves books but never reads. He likes to build his troops in an online game but does not proceed with the war. He likes to go swimming but is afraid of water.

Seeking this behaviour, can you tell whether he likes balloons and parties?

Twenty frogs are sitting on a log floating on the surface of a river. Two of them decide to jump off into the water.

How many frogs are there on the log at this moment?

I have branches, but no fruit, trunk or leaves. What am I?

How is a fly different from a mosquito?

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.