Question

2balls are drawn out of 10 red and 8 white balls, the number of ways same colour balls can drawn​

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Given :   2 balls are drawn out of 10 red and 8 white balls,

To Find :     the number of ways same color balls can drawn​

Solution:

same color balls can be drawn​

Either  both red   or Both white

Both red can be selected in   ¹⁰C₂   = 45 ways

Both White can be selected in  ⁸C₂   = 28  ways

Hence total = 45 + 28  = 73 Ways

73  ways same color balls can drawn​

Additional info :

Total Ways of selecting 2 balls = ¹⁸C₂ = 153

Probability of selecting same color ball = 73/153  

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