Answer :
Total number of balls :- 18
Number of black balls:- 4
Number of white balls:- 6
Number of Red balls:- 8
(a) Since there are 14 balls which are red and white colour, so the total number of favourable cases becomes = 14
Total number of balls = 18
P(Red or white) = 
(b) Not black balls mean that red or white is drawn.
Total number of balls = 18
P(Not black) = 
(c) Neither white nor black means that the ball is drawn are red
Total Number of favourable cases = 8
P(Neither white Nor black) = 
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