1.

ORA bag contain 5 black and o red balls Detwrnine the no of ways inwhich 2 black and 3 red halis con be selored.P.T0.

Answer»

Total number of black ball =5

Total number of red ball =6

No of ways of selecting 2 black balls =5C2

⇒5!/2!3!

⇒5×4×3!/2×3!

⇒10⇒10

No of ways of selecting 3 red balls =6C3

⇒6!/3!3!

⇒6×5×4×3!/3×2×3!

⇒20

Total no of ways of selecting 2 black and 3 red ball =10×20

= 200

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