Question

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

Answer 1

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.........

Answer 2

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