Can you find the missing piece of the Porsche?

What does this below rebus puzzle mean?

What does this rebus mean?

O
N
C
E
TIME

Can you count the number of children in the picture below

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?

You need to arrange three 7 and mathematical symbols to form number 1?

How old is your son? asked a man to his neighbour. My son is five times as old as my daughter and my wife is five times as old as my son. I am twice as old as my wife whereas my grandmother, who is celebrating her eighty-first birthday is as old as all of us put together.

How old is the man's son ?

You need to move three matchsticks to form three squares. Can you do it?

I have one of the three numbers: 1, 2, or 3 in my mind. I speak only truth. You can ask me just one question for which I will only reply in yes or no or don't know. What question will you ask from me so that you are able to know the number?

As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.