A test paper contains 51 true/false questions and 49 MCQs. If a question was chosen at random, then probability of it being a true/false question is .

0.41

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0.59

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0.51

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0.49

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Solution

The correct option is C 0.51
Number of true/false questions = 51
Number of MCQs = 49

Probability of an event $E$ , $P (E) = \frac{N u m b e r o f f a v o u r a b l e o u t c o m e s}{N u m b e r o f t o t a l p o s s i b l e o u t c o m e s}$

$∴$ The probability of choosing true/false question $= \frac{51}{51 + 49} = 0.51$

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