The probability of guessing a correct answer is \frac{x}{12}. If the probability of not guessing the correct answer is \frac{2}{3}, then what is x equal to?

UPSC NDA I 2010 Mathematics Paper

Question : 72 of 120

Marks: +1, -0

The probability of guessing a correct answer is ‌

. If the probability of not guessing the correct answer is ‌

, then what is x equal to?

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