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Probability — MATHS STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceMATHSProbability1 Mark
Question
A die has two faces each with number 1, three faces each with number 2 and one face with number 3. If die is rolled once, determine P(not 3)
✓

Answer

Total number of faces in a die = 6
Number of faces with number 3 = 1
$\therefore\;P(3) = \frac{1}{6}$
P (not 3) = 1 - P(3) $ = 1 - \frac{1}{6} = \frac{5}{6}$

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