How to do Combinations on the Ti 89 calculator. The Common Core related standard is, “Use
permutations and combinations to compute probabilities of compound events and solve problems.” Remember, the formula for Combinations is
n factorial divided by (n – r) factorial times r factorial. Where n is the total number of objects and
r is the number of those objects that you want to form a combination. The order of the
r objects does not matter. The answer is the number of combinations that you can make from
the number of r. Combination notation is also written as: little
n, capital C, and little r. n C r. Also known as n Choose r. Example. We have five different colored boxes.
Red, Blue, Green, Orange, and Purple. How many different combinations can we make
from any three of those five colored boxes. So the combination notation is five Choose
three. The Combination formula is five factorial divided by five minus three factorial times
three factorial. To solve with the Ti 89 calculator. Go to
second, Math. Math is the five key. Choose number seven, Probability. And choose number
three, n C r. Now on the calculator you see the Combination
notation n C r with an open parentheses. Enter the n variable which is five. Enter a comma,
and enter the r variable, which is three. Now put a closed parentheses. To calculate the answer, hit the ENTER button
on the lower right of the calculator. And the Answer is ten. You can make ten different
Combinations from any three colors of the total five colors. To see a video on how to do Permutations on
the Ti 89 calculator, click here. If you like this video, please give it a thumbs
up and subscribe to this channel.

How to do Combinations on the Ti 89 Calculator
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4 thoughts on “How to do Combinations on the Ti 89 Calculator

  • October 12, 2016 at 5:36 am

    Thanks homie

  • April 25, 2018 at 6:41 pm

    I really thank you men!!

  • September 28, 2018 at 7:01 pm

    The programming on the TI84 was better, why did they change it…  with this you have to plug in a comma and closed parenthesis in addition to the numbers.

  • November 16, 2018 at 1:05 am

    omg tyvm


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