The probability of guessing the correct answer to a certain question is x/5.If the probability ofnot guessing the correct answer is 4x/5, then find the value of x.
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probability of guessing the correct answer = 1- (probability of not guessing the correct answer)=> x/5=1-(4x/5)=>x/5 =(5-4x)/5
=>x=5-4x=>5x=5=>x=1
=>x=5-4x=>5x=5=>x=1
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Since, P (E) + P (E') =1
x + x/5 = 1
5x= 1×5
5x=5
X=1
x + x/5 = 1
5x= 1×5
5x=5
X=1
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