Quiz #1

  • Due Aug 16, 2023 by 3:20pm
  • Points 10
  • Submitting a file upload
  • File Types pdf
  • Attempts 0
  • Allowed Attempts 1
  • Available Aug 16, 2023 at 3pm - Aug 16, 2023 at 11:59pm 8 hours and 59 minutes
This assignment was locked Aug 16, 2023 at 11:59pm.

Question 1:

Prove that, for any n>0, the following identity is true:

LaTeX: \displaystyle\sum_k{n\choose k}k=n2^{n-1}∑k(nk)k=n2n−1

(Hint: Try dividing by n)

 

 

 

Question 2:

How many 3-letter sequences can be formed from the letters in THREE?

1692224400 08/16/2023 03:20pm