number........
Four times
triannual
To 'quadruple' something is to increase it fourfold
A multiple number is a multiple when you times it by something. This is what you call a multiple.
"Quadruple" refers to something that is four times as much or as many as something else. "Four times" simply means repeating something four times, without specifying if it is in relation to something else.
number........
Four times
If you multiply something by seven, you septuple it. If something is seven times as much as the original, it has increased sevenfold.
That you are supposed to do something four times everyday.
Writing in triplicate.
triannual
To 'quadruple' something is to increase it fourfold
If you are trying to ask, "What is 6 times something equals 24," then the answer is 4. Six times four is equal to 24
Five-fold?!
Say "Why?" or call out "Mum!"
that number to the fourth power.