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

1. satellite73

if they are independent, then $P(Q\cap R)=P(Q)\times P(R)$

2. satellite73

in other words, multiply the two probabilities

3. Kagome_gurl8

I tried and keep getting .92

4. RolyPoly

$\frac{2}{5} \times \frac{3}{7} \ne 0.92$...

5. satellite73

$\frac{2}{5}\times \frac{3}{7}=\frac{6}{35}$

6. Kagome_gurl8

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

7. Kagome_gurl8

@satellite73

8. Kagome_gurl8

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