Suppose that in an assortment of 20 calculators, there are 5 with defective switches. Draw with and without replacement. If two machines are selected at random, what is the probability that both have defective switches?
?
probability with replacement = __________
?
probability without replacement = __________
What will be an ideal response?
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Mathematics
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A. 0.000002369 B. 0 C. 0.000001876 D. 0.000001137
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A. 413 B. 563 C. 513 D. 537
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Provide an appropriate response.The only consecutive whole numbers that are both prime numbers are 
and 
.
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A. - 
B. 0
C. - 4
D. Undefined
Mathematics