Evaluate the factorial expression. 11! (11-3)! 11! (11-3)!

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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**Evaluate the Factorial Expression**

To evaluate the given factorial expression, follow the steps below:

\[ \frac{11!}{(11 - 3)!} \]

First, simplify the expression inside the factorial in the denominator:

\[ 11 - 3 = 8 \]

So, the expression becomes:

\[ \frac{11!}{8!} \]

Next, express \(11!\) as:

\[ 11! = 11 \times 10 \times 9 \times 8! \]

Substitute into the fraction:

\[ \frac{11 \times 10 \times 9 \times 8!}{8!} \]

Cancel out \(8!\) from the numerator and the denominator:

\[ 11 \times 10 \times 9 \]

Now, calculate the remaining multiplication:

\[ 11 \times 10 = 110 \]

\[ 110 \times 9 = 990 \]

Thus, the value of the expression is:

\[ \frac{11!}{(11 - 3)!} = 990 \]
Transcribed Image Text:**Evaluate the Factorial Expression** To evaluate the given factorial expression, follow the steps below: \[ \frac{11!}{(11 - 3)!} \] First, simplify the expression inside the factorial in the denominator: \[ 11 - 3 = 8 \] So, the expression becomes: \[ \frac{11!}{8!} \] Next, express \(11!\) as: \[ 11! = 11 \times 10 \times 9 \times 8! \] Substitute into the fraction: \[ \frac{11 \times 10 \times 9 \times 8!}{8!} \] Cancel out \(8!\) from the numerator and the denominator: \[ 11 \times 10 \times 9 \] Now, calculate the remaining multiplication: \[ 11 \times 10 = 110 \] \[ 110 \times 9 = 990 \] Thus, the value of the expression is: \[ \frac{11!}{(11 - 3)!} = 990 \]
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