11) There are 10 balls in a box numbered 0 to 9. If we select 4 balls randomly then find
the probability that we will never get the ball having number 0
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24
Answer:
Prob ability=8/9×7/8×6/7×5/6=1680/3024
Probability of never getting ball numbered 0=1-1680/3024
=1344/3024
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0
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If we look at each option:-
- Aprime no. - 2,3,5,7
- An odd no. - 1,3,5,7,9
- Multiple of 3 - 3,6,9
So, therefore we will take option with more nos. because there is a chance of getting it.So the answer would be 2 odd no.
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