Kagome_gurl8
Suppose Q and R are independent events. Find P (Q and R)
P(Q)=2/5, P(R)=3/7



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anonymous
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if they are independent, then
\[P(Q\cap R)=P(Q)\times P(R)\]

anonymous
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in other words, multiply the two probabilities

Kagome_gurl8
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I tried and keep getting .92

RolyPoly
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\[\frac{2}{5} \times \frac{3}{7} \ne 0.92\]...

anonymous
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\[\frac{2}{5}\times \frac{3}{7}=\frac{6}{35}\]

Kagome_gurl8
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Oh, thank you :D Would you mind helping me on one more problem?

Kagome_gurl8
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@satellite73

Kagome_gurl8
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P(Q)=1/3, P(R)=1/10