Question

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​

Answer 1

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

Answer 2

$\huge{\underline{\mathfrak{Solution:-}}}$

→$\boxed{\sf{2\:odd\;no}}$

$\huge{\underline{\mathfrak{Explaination:-}}}$

If we look at each option:-

1. Aprime no. - 2,3,5,7
2. An odd no. - 1,3,5,7,9
3. 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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