Can you find the missing piece of the Porsche?

How can you take 2 from 5 and leave 4?

I go up and I go down.
I go up towards the beautiful sky and down toward the green ground.
I am present tense.
I am past tense too
Children love me.

Who Am I?

I have feet, but no legs. Which animal Am I?

Can you find out which options fits best with the missing column?

I am quite hot but become too cold if you remove the first two letters. What am I?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

Pronounced as 1 letter, And written with 3, 2 letters there are, and 2 only in me. I’m double, I’m single, I’m black blue and grey, I’m read from both ends, and the same either way. What am I?

A and B have a certain number of chocolates with them. If B gives one chocolate to A, they will have an equal number of chocolates. But if A gives one chocolate to B, then A will be left with half the number of chocolates that B has.

Can you find out the number of chocolates they have right now?

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?