Ramesh plans to order a birthday gift for his friend from an onli
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Ramesh plans to order a birthday gift for his friend from an online retailer. However, the birthday coincides with the festival season, during which there is a huge demand for buying online goods, and hence deliveries are often delayed. He estimates that the probability of receiving the gift, in time, from the retailers' A, B, C, and D would be 0.6, 0.8, 0.9, and 0.5 respectively.
Playing safe, he orders from all four retailers simultaneously. What would be the probability that his friend would receive the gift in time?A. 0.004
B. 0.006
C. 0.774
D. 0.996
Please scroll down to see the correct answer and solution guide.
Right Answer is: D
SOLUTION
The probability that none of the retailers sends the gift in time will be:
= 0.4 × 0.2 × 0.1 × 0.5 = 0.004
∴ Probability of receiving atleast one gift in time will be:
= 1 – 0.004 = 0.996