Is this for money? like asking questions?

what do you mean ?

do you mean like if you ask questions you have to pay ?

welll no you don't is free unlesss you may for prainly plus which is just basically you can have as many answers as you want instead of watching an ad but otherwise is free and you don't have to pay.

I hope this helped :)

its 4 because 2 times 2 is 4, if you double the number two you get four