Question

The probability of guessing correct answer to a certain question is x/2 and of not
guessing correct answer is 2/3. Find the value of 'x'.
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Answer 1

Answer:

x is 2/3

Step-by-step explanation:

If probability of not guessing the answer is 2/3, then the probability of getting it right will be 1/3.

But, 1/3 = x/2

So, x = 1/3 into 2 which gives 2/3

Therefore, the value of x is 2/3

Hope it helped you :)

Answer 2

Step-by-step explanation:

P(E) +P(NOT E) = 1

x/2+ 2/3 = 1

3x+4/6= 1

3x+4=6

3x=2

x= 3/2

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