In a multiple choice test comprising 5 Questions, each with 4 choices, what is the probability of a student getting 3 or more questions correct? Each question has only one correct answer and the student is equally likely to choose any of the four choices.	Choose the correct answer.
A) 24/256  B) 53/512  C) 105/512  D) 459/512  E) 47/256
Probability for choosing correct answer is 1/4 and incorrect answer is 3/4   For 3 correct answers,   C(5,3)*(1/4)^3*(3/4)^2=90/(4^5)   For 4 correct answers,   C(5,4)*(1/4)^4*(3/4)^1=15/(4^5)   For 5 correct answers,   C(5,5)*(1/4)^5*(3/4)^0=1/(4^5)   So total probability   =106/1024   =53/512   Ans 53/512
<result>B</result>
In a multiple choice test comprising 5 Questions, each with 4 choices, what is the probability of a student getting 3 or more questions correct? Each question has only one correct answer and the student is equally likely to choose any of the four choices.