A) \[\frac{{{P}_{2}}}{{{P}_{1}}+{{P}_{2}}-{{P}_{1}}{{P}_{2}}}\]
B) \[\frac{{{P}_{2}}\,(1-{{P}_{1}})}{1-{{P}_{1}}{{P}_{2}}}\]
C) \[{{P}_{2}}\,(1-{{P}_{1}})\]
D) \[\frac{{{P}_{2}}}{1-{{P}_{1}}}\]
Correct Answer: D
Solution :
A: Target I is\[\text{hit}={{P}_{1}}\] ; B: Target II is \[\text{hit}={{P}_{2}}\,\,;\] |
C: none is hit \[1-({{P}_{1}}+{{P}_{2}})\]\[\Rightarrow \]\[P\,(E)=\frac{{{P}_{2}}}{1-{{P}_{1}}}\] |
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