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Mathematical Methods — Question 7

QCAA 2020, Paper 2 · 1 mark

Q7 · 2020 · Technology-activeSimple familiar1 mark

QUESTION 7

The records of a shoe manufacturer show that 10% of shoes made are defective. Assuming independence, the probability of getting 2 defective shoes in a batch of 20 is
(A)
0.1937
(B)
0.2852
(C)
0.3917
(D)
0.6083
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