A person has 21 tickets with numbered 1 to 21. Three tickets are selected from it at random. Find the probability of an event that numbers of selected three tickets are in A.P.
KUMAR PRAKASHAN|Exercise Practice Paper - 3 (Section - D)|1 Videos
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KUMAR PRAKASHAN|Exercise Practice Paper - 1 (Section - D)|2 Videos
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KUMAR PRAKASHAN-PROBABILITY-Practice Paper - 13 (Section - D (Answer the following questions))
