# Question

A doctor knows from experience that 10% of the patients to whom she gives a certain drug will have undesirable side effects. Find the probabilities that among the 10 patients to whom she gives the drug:

a. At most two will have undesirable side effects.

b. At least two will have undesirable side effects.

a. At most two will have undesirable side effects.

b. At least two will have undesirable side effects.

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