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  3. there are 15 light bulbs of which 5 are defective.

There are 15 light bulbs of which 5 are defective. In how many ways can six...

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Question

Statistics

There are 15 light bulbs of which 5 are defective. In how manyways can six light bulbs with exactly one defective be chosen?

C(15,6)

C(10,5)*C(5,1)

P(10,5)*P(5,1)

P(15,6)

How many ways are there to fill out a 25 question multiplechoice exam if there are 5 ways to answer each question?

255

525

C(25,5)

P(25,5)

How many nonnegative solutions (xi >=0 for1<=i<=3) does the equation x1 + x2 +x3 = 10 have?

103

C(10,3)

C(12,2)

310

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