Question

There are two bags containing white and black balls. In the first bag there are 8 white and 5 black balls and in the second bag there are 4 white and 7 black balls. One ball is drawn at random from one of the bags chosen at random. Find the probability of that ball being black.

Answer 1

HEY MATE,

ANSWER:}

in first bag - white balls - 8

black balls-5

in second bag - white balls - 4

- black balls- 7

sum of all balls of both bag- 24

sum of white balls- 12

sum of black balls-12

P( black ball ) - sum of black balls / sum of all balls

= 12/25

HOPE IT HELPS!!!!!!!!!!!!!!!!!

Answer 2

Answer:

1/2

Step-by-step explanation:

no of black balls=12

No of white balls=12

total no of balls=no of white balls+no of black balls=12+12=24

now,

probability =no of black balls/ total no of balls=12/24=1/2