There are 5 black, 10 white nd five yellow balls in a box. what is probability of getting yellow balls
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0
Answer:
Total balls = 20
Yellow Balls = 5
P(Yellow Ball) = 5/20 = 1/4
Answered by
4
let, five black ball be B¹,B²,B³,B⁴,B⁵.
Ten white ball is W¹,W²,W³,W⁴,W⁵,W⁶,W⁷,W⁸,
W⁹,W¹⁰.
five yellow ball is Y¹,Y²,Y³,Y⁴,Y⁵.
Sample space,
S={B¹,B²,B³,B⁴,B⁵,W¹,W²,W³,W⁴,W⁵,W⁶,W⁷,W⁸,W⁹,W¹⁰,Y¹,Y²,Y³,Y⁴,Y⁵}
n(S)=20
let,A be the event getting yellow balls.
A={Y¹,Y²,Y³,Y⁴,Y⁵}
n(A)=5
Now,
p(A)=n(A)
n(S)
=5
20
=1
4
therefore the probability getting yellow balls is 1/4
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