Question

the mean of 5 children in a family is 12 years. four of them are respectively 6, 11,13,16. find the probability of getting white ball. with full brief
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Answer 1

I don’t think your question is correct

Answer 2

Answer:

I didnt get your question but... i am finding the age of the 5th child

let the age of the 5th child be x

then...

$\frac{6+11+13+16+x}{5} = 12\\\frac{46+x}{5} =12\\46+x = 12x5\\46+x = 60\\x = 60-46\\x = 14$

Hope this helps you...