SOLUTION: how many groups of 3 toys can child choose to take on vacation from a toy box containing 11 toys

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Question 657361: how many groups of 3 toys can child choose to take on vacation from a toy box containing 11 toys
Found 2 solutions by kevwill, Edwin McCravy:
Answer by kevwill(135) About Me  (Show Source):
You can put this solution on YOUR website!
The number of different ways to choose 3 toys from a toy box containing 11 toys is: %28matrix%282%2C1%2C11%2C3%29%29 which can also be expressed as 11%21%2F%283%21%2A%2811-3%29%21%29 = 11%21%2F%283%21%2A8%21%29 = 11%2A10%2A9%2F%283%2A2%2A1%29 = 165.

Answer by Edwin McCravy(20064) About Me  (Show Source):
You can put this solution on YOUR website!
That's 11 things taken 3 at a time.

The combinations of 11 things taken 3 at a time is 

C(11,3) = %2811%2A10%2A9%29%2F%283%2A2%2A1%29 = 165

You can also get that on a TI-84

Press ON
Press CLEAR
Press 1
Press 1
Press MATH
Press the left arrow key
Press 3
Press 3
Press ENTER

You'll see this: 

     11 nCr 3 
                   165

Edwin