14.8...........
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The answer will be 1 because 80+80=160 not 100 so it cant be added twice so it has to be one.
Answer:

And if we use the permutation formula given by:

And replacing we got:

Step-by-step explanation:
For this problem we want to find the following expressionÑ

And if we use the permutation formula given by:

And replacing we got:

Answer: A and c
Step-by-step explanation: because they are the only ones that have p,x,m and not just seperate.