List of top Mathematics Questions on binomial distribution asked in KEAM

An unbiased die is tossed until 5 appears. If \( X \) denotes the number of tosses required, \( \frac{25}{P(X=5)} \) is equal to

The mean and variance of a binomial distribution are 8 and 4 respectively. What is \( P(X=1) \)?

The mean and variance of a binomial distribution are 8 and 4 respectively. What is \( P(X=1) \)?