I'm doing Permutations.

Simplify 9!
a.45
b.362,880
c.265,456
d. 125,396
I think it's a.

no, 45 = 9*5

9! = 9*8*7*6*5*4*3*2*1 = 362880

How ever did you decide on A?

Lol thanks so much Steve, I didn't understand how to do these at all but wow, they are super easy!!

To simplify 9!, you need to calculate the factorial of 9. Factorial is the product of all positive integers less than or equal to the given number.

To find the factorial of 9, you can multiply 9 by all the positive integers less than it until you reach 1.

9! = 9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1

Using a calculator or performing the calculation manually, you will find that 9! is equal to 362,880.

Therefore, the correct answer is b. 362,880.