Published by:
CGP EDU Academic Team
Published on: August 13, 2026
A bag contains 10 white and 3 black balls. Balls are drawn one by one without replacement till all the black balls are drawn. The probability that the procedure of drawing balls will come to an end at the 7 th draw is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
The drawing procedure ends at 7 th draw, if 3 rd black ball comes at 7 th draw. Hence, in 1 st six draws there will be 2 black balls and 4 white balls.
So, required Probability 
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