# math

7 topping how many different 2 topping can there be

1. 👍 0
2. 👎 0
3. 👁 72
1. combination of 7 toppings taken 2 at a time without regard for which is first

n!/[r!(n-r)!]

7!/[ 2! (5!) ]

7 * 6 /2

7 * 3

1. 👍 0
2. 👎 0

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