JEE AdvancedProbabilityHard
Question
A multiple choice examination has 5 questions. Each question has three alternative answers of which exactly one is correct. The probability that a student will get 4 or more correct answers just by guessing is :
Options
A.
B.
C.
D.
More Probability Questions
In a purse there are 10 coins, all 5 paise except one which is a rupee. In another purse there are 10 coins all 5 paise....A fair coin is tossed repeatedly. If tail appears on first four tosses, then the probability of head appearing on fifth ...A bag contains 20 tickets marked with numbers 1 to 20. Two tickets are drawn, the probability that both numbers are prim...Two dice are thrown. What is the probability that the sum of the numbers appearing on the two dice is 11, if 5 appears o...3 dice are thrown simultaneously whose colours are red, blue and green. Probability that number obtained on red is more ...