Order does not matter so use "n choose k" formula is used to find number of unique combinations.
c=n!/(k!(n-k)!) where n is total possible choices and k is number of selections.
c=4!/(2!(4-2)!)
c=4!/(2!2!)
c=24/(2*2)
c=24/4
c=6
So there are 6 different two topping options when there are four different toppings to choose from.
Answer:
The mean ( average ) is 7.54
Step-by-step explanation:
Answer:
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Numerical expressions use numbers and algebraic expressions use variables.
-3*-5 = 15
<span>When the signs are the same the answer is positive.</span>
