help me ......... .....................
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Sakshi15403:
x = 4
sorry 3
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Answered by
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the probability of black is x/12
but if 6 is added then
x+6/12+6=x+6/18
according to the condition
x+6/12=2(x/12)
solve this u will get it any doubt comment
but if 6 is added then
x+6/12+6=x+6/18
according to the condition
x+6/12=2(x/12)
solve this u will get it any doubt comment
thnx
Answered by
1
Hey... I think this can be ur answer!!
Total balls = n(S) =12
Black balls =n(E) =x
SO P(E) =x/12...
The probability of black ball is x/12
Now,
n(s)=12+6=18
No of black balls =x+6
According to the question,
x+6/18=2( x/12)
x+6/18=2x/12
x+6/18=x/6
6(x+6)=18x
6x+36=18x
12x=36
x=3
Hope it helps you dear ☺️☺️
Total balls = n(S) =12
Black balls =n(E) =x
SO P(E) =x/12...
The probability of black ball is x/12
Now,
n(s)=12+6=18
No of black balls =x+6
According to the question,
x+6/18=2( x/12)
x+6/18=2x/12
x+6/18=x/6
6(x+6)=18x
6x+36=18x
12x=36
x=3
Hope it helps you dear ☺️☺️
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