JEE Math Practice Question
The mean and variance of a random variable $$X$$ having binomial distribution are $$4$$ and $$2$$ respectively, then $$P(X=1)$$ is :
- A.$${1 \over 4}$$
- B.$${1 \over 32}$$
- C.$${1 \over 16}$$
- D.$${1 \over 8}$$
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