Question

suppose you find six articles related to the topic of your research paper. in how many ways can you choose four articles to read

Answer 1

Given

Number of articles you have to read = 6

Find

Number of ways to choose four articles to read.

Step-by-step explanation

here , we apply permutations,

`^nP_r=(n!)/((n-r)!)`

so ,

`\begin{gathered} ^6P_4=(6!)/((6-4)!) \\ \\ ^6P_4=(6!)/(2!) \\ \\ ^6P_4=(6*5*4*3*2!)/(2!) \\ \\ ^6P_4=360 \end{gathered}`

Final Answer

Hence , the number of ways to choose four articles to read is 360