Math, asked by kiranporte267, 2 months ago

एक बैग में समान आकृति के तीन सफेद और चार काले गेंद है यदि एक व्यक्ति एक बार में केवल 2 गेंद निकालता है तो दोनों गेंदों की सफेद होने की प्रायिकता ज्ञात कीजिए​!​

Answers

Answered by arjun6355m
51

Answer :

 \bf\underline{given }

  • 1 bag have 4 black balls
  • also 3 white balls
  • Total balle = 7 balls

 \bf \underline{to \: find}

  • if person take two balls in one draw
  • question is for without replacement
  • find answer for two with balls selection

 \bf \underline{soution}

  • number of ways for selecting any two balls = 7C2 = 21
  • number of ways for selecting white balls = 3C2 = 3

\sf\boxed{\underline{\red{\fcolorbox{red}{black}{Probability =  3/21}}}}

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