a bag contains 15 balls in which some are white and other black. of the probability of taking out white ball 2/3 than find how many white ball are there in bag.
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Answered by
2
Total number of cases 15
Probability of getting white ball=( No. of white balls )/ Total number of balls.
Therefore,
No. of white balls / 15= 2/3
No. of white balls = 2/3* 15
Therefore, White balls = 2*5
Total number of white balls = 10 .
Hope it helps ❤ ❤
fghf76hggf:
how
here are total outcomes of black ball is 3
than 15-3=12 white balls
Bhai. isne likha h probability of getting white ball from the bag . not Between black and white
Probability me Jitna koi cheez hota h / total nom of cheeze hi probability kehlati h
mene itna likne ki mehenat ki uska koi faida nahi hua
ye dunoya me sab chutiye he
Hahah bhai...Kya bol rha h
Answered by
1
let s be the sample space
(Puri tarike se Kitni cheez hai)
so
nS=(15)
LET A bet the event such than the ball taken out is white
LET x be white ball
nA=x
Pa
(PROBABLITY OF A)
Pa=2/3....given
Pa=nA/nS
2 = x
___ ___
3. 15
2×15
---- = x
3
3 ×5 =15
so
2 x 5 = x
10 = x
there are 10 white balls in bag
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