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Chapter 8: Problem 79

Use a calculator's factorial key to evaluate each expression. $$\frac{20 !}{(20-3) !}$$

Short Answer

Expert verified
The answer is the result obtained from the division in step 3.

Step by step solution

01

Calculate (20 - 3)

The first thing to do is to evaluate the expression in the brackets, this is simple subtraction, 20 - 3 equals to 17.
02

Evaluate the Factorials

Use the calculator or the math software to find the factorial of 20 and 17. So calculate 20! and 17!
03

Divide the Factorials

After getting the factorial of 20 and 17 respectively, proceed to divide them. This will give the result of the original expression \(\frac{20!}{(20-3)!}\)

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