A room contains 3 men and 5 women. A person leaves then re-enters the room 6 times, and 5 of those 6 times a man leaves the room
1 answer:
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Step-by-step explanation:
Total numbers of pizza toppings = 12
Number of three topping pizzas can be ordered are:
where = n = number of elements
k = number of elements choosen
n= 12 , k = 3
We calculated the number of permutations. We made this choice because in permutation order of element matters but in combination its not.