What goes up but never comes down?

There are 3 apples in the basket and you take away 2. How many apples do you have now?

Jack have ten pairs of black socks, eight pairs of white socks and seven pairs of green socks. Everything is mixed in a draw. As there is no light he were not able to identify the colour of the socks. How many of the socks did he want to take to match one pair

Identify the hidden meaning behind this picture?

Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

What is the fastest way to double your money?

When we see 2 but call 10?

Complete the given grid with valid words. You can only use the letters AAEEIIMMPPTT.

Hint: The grid reads the same across as down.

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

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