a box contains 5 brown and 4 white socks.A man takes our two socks.the probability that they have are of same color is

ans

• Karthik
• 3503 दृश्य
• 3 उत्तर

• P(1st brown AND 2nd brown) OR P(1st white AND 2nd white) = and since AND is a clue to multiply and OR is a clue to add, P(1st brown)×P(2nd brown) + P(1st white)×P(2nd white) = P(1st brown) = 5/9 P(2nd brown, when 1st was brown) = 4/8 P(1st white) = 4/9 P(2nd white, when 1st was white) = 3/8 P(1st brown)×P(2nd brown) + P(1st white)×P(2nd white) = (5/9)(4/8) + (4/9)(3/8) 20/72 + 12/72 32/72 4/9

  • Sweta
  • 14 जुलाई
  • 0 टिप्पणी

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• strongstrong5c2/9C2 + 4C2/9C2/strong/strongbr /strongstrong= (10 + 6)/36br /= 4/9/strong/strong

  • Sagar
  • 15 दिसम्बर
  • 1 टिप्पणी

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• 4/9

  • Anup
  • 16 सितम्बर
  • 0 टिप्पणी

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