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Question

If 30% of the visitors to an ice cream shop have chocolate ice-cream, then what is the probability that 2 out of 3 people who entered the store on Saturday at 5 pm will have chocolate ice-cream?

A
0.16
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B
0.15
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C
0.19
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D
0.28
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Solution

The correct option is C 0.19

Option (c)

Probability of a success= 0.3

Probability of a failure= 0.7

Required Probability = 0.3 × 0.3 × 0.7 × 3C1 = 0.189


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