Probability Question 347
Question: If there are n independent trials, p and q the probability of success and failure respectively, then probability of exactly r successes or Let p be the probability of happening an event and q its failure, then the total chance of r successes in n trials is
[MP PET 1999]
Options:
A) $ ^{n}{C_{n+r}}p^{r}{q^{n-r}} $
B) $ ^{n}C_{r}{p^{r-1}}{q^{r+1}} $
C) $ ^{n}C_{r}{q^{n-r}}p^{r} $
D) $ ^{n}C_{r}{p^{r+1}}{q^{r-1}} $
Show Answer
Answer:
Correct Answer: C
Solution:
It is a fundamental concept.
BETA
