Question

the Probability of answering a question is x/16 and not answering is 1/4 find value of x​

Answer 1

Step-by-step explanation:

P(E) + P( not E) = 1

x/16 + 1/4 = 1

x+4 = 16

x=12 ANS

Answer 2

Answer:

x = 12

Step-by-step explanation:

The sum of all probabilities must always be equal to 1

$\frac{x}{16}+\frac{1}{4} = 1\\\frac{x}{16}+\frac{4}{16} = 1 \\x+4 = 16\\x = 16-4\\x = 12$