Securing Higher Grades Costing Your Pocket? Book Your Coursework Help at The Lowest Price Now!

  • +1-617-874-1011 (US)
  • +44-117-230-1145 (UK)
Online Customer Service

Combination Homework Help

Introduction to Combination

A Combination is an arrangement of items in which order does not matter. To find the number of Combinations of n items chosen r at a time, you can use the formula

nCr = n!/r!(n-r)! where 0 ≤ r ≤ n

Example for Combination

A class consists of 14 boys and 17 girls. Four students from the class are to be selected to go on a trip.

(a) How many different possibilities are there for the 4 students selected to make the trip?

(b) If it has been decided that 2 boys and 2 girls will make the trip, then in how many different ways could the 4 students be selected?

Solution

(a) C(31,4) = = 31,465

(b) C(14,2) ! C(17,2) = 91 ! 136 = 12,376

Number of combinations: The number of all combination of n things, taken r at a time is:

nCr=n!/R!(n-1)! = (n(n-1)(n-2)….to r factors)/r!

An Important Result:

nCr=1 and nCr = nC(n-r)

Example:

combination homework help example
combination homework help
Combination Assignment Help
PLACE ORDER NOW
captcha image 

Resources

  •   24 x 7 Availability.
  •   Trained and Certified Experts.
  •   Deadline Guaranteed.
  •   Plagiarism Free.
  •   Privacy Guaranteed.
  •   Free download.
  •   Online help for all project.
  • Need Assignment Help

Testimonial

Urgenthomework helped me with finance homework problems and taught math portion of my course as well. Initially, I used a tutor that taught me math course I felt that as if I was not getting the help I needed. With the help of Urgenthomework, I got precisely where I was weak:
Read More

Tap to Chat
Get Instant Assignment Help
Tap to Chat
Get Instant Assignment Help