Question

what is the probability that among K random digits (a) 0 doesn't appear (b) neither 0 nor 1 appears
(c) atleast one of the two digits 0 and 1 doesn't appear.

[Use formula of:
P(AuB) = P(A) + P(B) - P(AB) ]​
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Answer 1

Answer:

Option a is the correct answer