In Rwanda, the chance for rain on any given day is 1/2. What is the probability that it rains on 4 out of 9 consecutive days in Rwanda?	Choices
A) 4/7	B) 3/7	C) 63/256	D) 4/28	E) 28/135
using Binomial. theorem   n63/256r (p)^r (q)^n-r   963/2564 (1/2)^4 (1/2)^r   which is 63/256   Answer is 63/256.
<result>C</result>
In Rwanda, the chance for rain on any given day is 1/2. What is the probability that it rains on 4 out of 9 consecutive days in Rwanda?