Quantitative Aptitude MCQ - Probability

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Two balls out 14 can be drawn in 14C2 ways which is the total number of outcomes.

Two white balls out of 8 can he drawn in 8C2 ways

Probability of drawing 2 white balls

                                                          Probability

Similarly 2 red balls out of 6 call be drawn in
6C2 ways

                                                            Probability
Probability of drawing 2 red balls
Probability of drawing 2 balls of the same
colour (either both white or both red)

  Probability

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Correct AnswerOption B
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Probability of drawing an ace from a deck of 
52 cards =  4/52
Similarly the probability of drawing a card of
spades = 13/52
Probability of drawing an ace of spades = 1/52
Since two events (i.e. a card being an ace and a
card being of spades) are not mutually exclusive.
therefore
Probability of drawing an ace or a spade

Probability

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Correct AnswerOption A
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Probability
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Probability
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Correct AnswerOption A
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Probability
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