The following question, there are three statements I, II and III. Read the question carefully and mark your answer according to which statements(s) is/are sufficient to the answer the question. Find the probability that both the balls are of blue color. Statement I: In a bag containing 4 red balls, 6 blue balls and 8 yellow balls, two balls are drawn at random one by one without replacement. Statement II: First ball is blue and if this happens then 5 more blue balls are added in the bag Statement III: Total blue balls are twice more than the other balls at the end of the drawing of balls?

All I, II and III
Only I and II
Only II
Only I
None of these

LohaHridoy

5 views

2025-01-04 04:42

1 Answers

AhmedNazir

Option 2 : Only I and II

From statement I and II

Probability of first ball to be blue = ⁶C₁/¹⁸C₁

Probability of the second ball turns out to be blue with the given condition = ¹⁰C₁/²²C₁

Required probability = (⁶C₁/¹⁸C₁) × (¹⁰C₁/²²C₁) = 5/33

∴ Only I and II are required and statement III do not give any proper relation and will not help in solving

5 views Answered 2022-09-04 04:29

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