Plz answer 8 b part

Asked by lovemaan5500 | 7th Feb, 2020, 09:47: AM

Expert Answer:

straight E equals space 1 space white space ball space and space 1 space red space ball space is space selected space
straight A equals bag space straight A thin space is space selected
straight B equals bag space straight B thin space is space selected
straight C equals bag space straight C thin space is space selected
straight P left parenthesis straight A right parenthesis equals straight P left parenthesis straight B right parenthesis equals straight P left parenthesis straight C right parenthesis equals 1 third
straight P left parenthesis straight E divided by straight A right parenthesis equals fraction numerator straight C presuperscript 1 subscript 1 cross times straight C presuperscript 3 subscript 1 over denominator straight C presuperscript 6 subscript 2 end fraction equals 1 fifth
straight P left parenthesis straight E divided by straight B right parenthesis equals fraction numerator straight C presuperscript 3 subscript 1 cross times straight C presuperscript 2 subscript 1 over denominator straight C presuperscript 8 subscript 2 end fraction equals 3 over 14
straight P left parenthesis straight E divided by straight C right parenthesis equals fraction numerator straight C presuperscript 2 subscript 1 cross times straight C presuperscript 4 subscript 1 over denominator straight C presuperscript 9 subscript 2 end fraction equals 2 over 9
now
straight P left parenthesis straight E right parenthesis equals straight P left parenthesis straight E divided by straight A right parenthesis cross times straight P left parenthesis straight A right parenthesis plus straight P left parenthesis straight E divided by straight B right parenthesis cross times straight P left parenthesis straight B right parenthesis plus straight P left parenthesis straight E divided by straight C right parenthesis cross times straight P left parenthesis straight C right parenthesis
equals 401 over 1890

Answered by Arun | 8th Feb, 2020, 09:12: AM