Consider a binomial random variable with n = 9 and p = 0.3. Let x be the number of successes in the sample.
a. Find the probability that x is exactly 2.
b. Find the probability that x is less than 2.
c. Find P(x > 2).
d. Find P(2 ≤ x ≤ 4).
I've solved the a) but I can't get the other 3. I got 0.267 for a).

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So do i have to do the same thing i did for part a but repeat it for x = 0 and x = 1?

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