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ram and shyam are playing a game of chance. ram tosses 8 fair coins, and wins if he obtains at least 4 heads. The probability that ram wins can be expressed as a/bab, where a,b are coprime positive integers .what is the value of a+b?{give solution plz}a,b

are coprime positive integers. What is the value of

a+b

Ayushi Agrawal , 13 Years ago
Grade 11
anser 1 Answers
Shaurya Gupta

total no of outcomes - 2x2x2x2x2x2x2x2 = 2^8=256 (-1)

P(favoured outcomes) - (1/2)^4 + (1/2)^5 + ........(1/2)^8 (-2)

therefore P(ram winnning) = (-2/1) 

Last Activity: 13 Years ago
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