what does this mean 1000!/999!?

I need help! Not sure how to do this!

I’m not a 100 percent sure, but the “!” sign means the product of all consecutive numbers after it.
For example: 5! = 5x4x3x2x1 and 10! = 10x9x8x7x6x5x4x3x2x1.
Now 1000! is a huuuuuuge number and a calculator can’t handle it. There’s an easy way to complete this.
1000! = 1000x999x998x997x996……all the way up to x3x2x1.
And
999! = 999x998x997x996….all the way up to x3x2x1
So basically 1000! = 1000×999!. When dividing 1000! by 999! the two 999!s cancel each other out leaving you with 1000. So the answer is 1000

a llloooonnngg countdown

“!” is a symbol for factorial. It means that you multiply that number with every whole number smaller than it down to 1. For example your problem means:
(1000 * 999 * 998…) / (999 * 998 * 997…)
No calculator will be able to do this for you because the numbers get too big. Using some logic you can see that almost everything cancels out leaving you with 1000.

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1000! = 1000 * 999!

1000!/999! = (1000 * 999!)/999! = 1000

1000 factorial divided by 999 factorial.

The exclamation mark means to take the factorial.

4! = 4 x 3 x 2 x 1 = 24
8! = 8 x 7 x 6 x 5 x 4 x.. etc.

There’s help with the question. I just didn’t give you the final answer though

Answer 6

IT’S UNDER 9000! >:O

Answer 7

Factorials: 5! = 5 * 4 * 3 * 2 * 1
Knowing this,
1000! = 1000 * 999!

1000!/999! = (1000 * 999!)/999! = 1000

Dunno

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