Question

the probability of guessing the correct answer to a certain question is x/12 if the probability guessing the wrong answer 3/4 find x if a student copies the answer then its probability is 26. if he doesn't copy the answer then the probability is 2y/3 find the value of y please help​​

Answer 1

Answer:

as you know that addition of p and p' is 1 where p' is the probability of not happening the event and p is probably of happening the event.

$\frac{x}{12} + \frac{3}{4} = 1$

$\frac{x}{12} = \frac{1}{1} - \frac{3}{4}$

$\frac{x}{12} = \frac{4 - 3}{4}$

$\frac{x}{12} = \frac{1}{4}$

$x = \frac{12}{4}$

$x = 3$

Now 2:

The answer of second sum is not possible as the probability can never be greater than 1 and in the question it's given 26.

Step-by-step explanation:

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Answer 2

Now2:  y=1

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