15. Incorrect. The answer is false not true. The probability of drawing neither an engineer with 4 years' experience nor an engineer from India can be denoted by P (4' ∩ India'). However, P (4' ∩ India') = P (4 U India)'. Accordingly,

 

P(4 U India)' = 1 - P(4 U India) = 1 - [P(4) + P(India) - P(4 ∩ India) ]

 

= 1 - [4/52 + 13/52 - 1/52] = 9/13