A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • 4 years ago

A student has 11 writing implements: 6 pencils, 4 ball point pens, and 1 felt tip pen. The student can select 6 writing utencils in 462 ways. In how many ways can the selection be made if no more than one ball point pen is selected?_____ Anyone know how to solve this

  • This Question is Closed
  1. ash2326
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Student has 6 ball point pens, 4 ball point pens and 1 felt tip pin. We have to find the no. of ways when he can select no more than 1 ball point pen. No. of ways when he has to select 1 pen and 5 other utensils= 6C1*5C5=30 ways

  2. ash2326
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Did you get it cwhutche?

  3. anonymous
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    it wasnt right

  4. anonymous
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    still isnt correct

  5. anonymous
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    it has beat me

  6. Directrix
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    I think I see my error.

  7. anonymous
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    do ya i still cant figure this out

  8. Directrix
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Zero or one ball point pens will be chosen. There are C(4,0) times C(7,6) = 7 ways to choose 6 writing instruments that are not ball points. [Choose none of the ball points and 6 of the other 7.] There are C(4,1) times C(7,5) ways to choose 6 writing instruments, exactly one of which is a ball point pen .[Choose one of the ball points and 5 of the others.] There are, then, (4) (21) = 84 ways to choose 1 ball point and 5 others. That gives 7 + 84 = 91 ways to choose 6 writing instruments, at most one of which is a ball pen. answer: 91

  9. Directrix
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    What about now, CW?

  10. anonymous
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    That is it man.... awesome I appreciate it

  11. Directrix
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yw. Sorry for my arithmetic errors early on.

  12. anonymous
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    no problem i made a million of them and had no clue i appreciate your time on this problem very much

  13. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.