How to calculate combinations on TI-84 calculator?
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Calculating combinations on a TI-84 calculator is straightforward using the built-in combination function. Here's how you do it:
Access the Math Menu: Press the MATH button to access the Math menu.
Select the Prob Function: choose PROB and then select 3:nCr and press ENTER. This will open the combination function.
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Enter the Values:
Enter the total number of items . Enter the number of items to choose . Perform the Calculation: After entering and , press ENTER again to calculate the number of combinations.
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The calculator will display the result, which is the number of ways to choose items from a set of items without regard to the order of selection.
Here's an example: If you want to calculate the number of combinations for choosing 3 items from a set of 5, you would:
Press MATH to access the Math menu. choose PROB, select 3:nCr, and press ENTER. Enter 5 for and 3 for . Press ENTER to get the result. The TI-84 calculator will then display the number of combinations, which in this case is 10.
Remember that the combination formula is , where denotes factorial. The calculator performs this calculation for you when you use the comb function.