Question:medium

Four persons can hit a target correctly with probabilities $\frac{1}{2}, \frac{1}{3}, \frac{1}{4}$ and $\frac{1}{5}$ respectively. If all hit at the target independently, then the probability that the target would be hit, is:

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$P(\text{At least one}) = 1 - P(\text{None})$. This complement rule is much faster than calculating all hit combinations.
Updated On: May 16, 2026
  • $1/120$
  • $4/5$
  • $1/5$
  • $2/3$
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The Correct Option is B

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