You have a 1 in 10 chance of winning a lottery. If you play 5 times, what is the probability that you win at least once?
Category: Math · Difficulty: hard
Hint: Use the complement probability method.
Answer
0.41
Explanation
The probability of losing each time is 9/10. The probability of losing all 5 times is (9/10)^5. Therefore, the probability of winning at least once is 1 - (9/10)^5 = 0.41.
This is a hard math riddle — a tricky one that takes a little thought. The answer is 0.41.
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