The probability of guessing the correct answer to a certain question is x by 3. If the probability of not guessing the correct answer is x by 5, then find the value of x
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The probability of guessing the correct answer to a certain question is x by 3. If the probability of not guessing the correct answer is x by 5, then find the value of x
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Step-by-step explanation:
Probability of guessing the question=x/3
Probability of not guessing the question=x/5
We know that probability of sure event =1
Probabilty of guessing+probablity of not guessing=1
=x/3+x/5=1
=5x/15+3x/15=1
=8x/15=1
=8x=15
=x=15/8
hope it helps.........
Step-by-step explanation:
We know ,
Probability of the sure event = 1
Then,
probability of guessing = x/3
probability of guessing = x/5
So,
x/3 + x/5 = 1
(5x + 3x)/15 = 1
8x= 15
x= 15/8 answer