Question

the probability of guessing the correct answer is X upon 12 if the probability of gasing wrong answer is 3 upon 4 find x ​

Answer 1

p(right answer) +p(wrong answer) =1

thus ,

x/12 + 3/4 =1

=>( x+9)/12 =1

=> x+9 =12

=>x= 3

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Answer 2

Step-by-step explanation:

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