What always comes into a house through the keyhole?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

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

Doctor Alex and a bus driver John are both in love with the same woman named Olivia. The bus driver need to go for a long trip of 10 days, Before he left he gave Olivia 10 apples.

Can you make the number 24 by utilizing the numbers 1, 3, 4 and 6? You must use one number only one time and you can use mathematical operation symbols anytime anywhere.

Remove two matchsticks to make the below equation correct.

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

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

What is the word or phrase?

I have four wings but can't fly.
I express no emotions.
I am found on the exact spot every time you look.
I keep toiling away with a little sound.

Do you know what am I?