alleryOne ball is drawn uniformly from 9 red and 1 blue ball. Find P(blue).
A9/10
B1/9
C1/10
D1/2
Answer & Solution
Correct answer: C. 1/10
The single blue ball is one of ten equally likely individual balls.
Keep practising Statistics and Probability
Browse all Statistics and Probability questions for GMAT, or explore more Mathematics topics.
Related questions
Of 20 tokens, 5 losers are removed; 3 winners remain. Draw uniformly from the rest. Find PA fair die's face 6 is relabelled 1; other labels stay. What is P(an odd score)?Uniform draw from 4 red and n blue balls, n a positive integer: P(red)>2/3. Largest n?Uniform red-blue bag draws: P(blue)=2/7; after 3 red are removed, 1/2. Original total?Red-blue bag, uniform draw: P(blue)=1/3; adding 4 blue makes it 1/2. Original total?A random two-digit positive integer has matching digits with what probability?A fair die's six faces read 1, 1, 2, 3, 5, 8. What is P(a prime score)?Exactly three outcomes have probabilities 1/2, 1/3 and p. Find p.