Question 423183
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Hi
Always recommend sketching out the 'situation' for clarity
A) P(The message is for a man) = 4/10 
B) P(The message is not for a male engineer) = 1-3/10 = 7/10 


      Manager  Engineer	 Lawyer    total				
Female	3        2      1      6
Male        1        3      0      4
total       4        5      1      10