1 bag contains a red balls and some black
balls probablity of getting black balls 1/4 Find mumber of black balls
Answers
Answered by
0
Answer:
in dont know this answer srryyy
Answered by
3
Step-by-step explanation:
P (of red ball) =1−(
10
3
+
5
2
)
=1−(3+
10
4
)
=1−
10
7
=
10
10−7
P (of red ball) =
10
3
No. of black balls =
totalno.ofballs
20
5
2
=
totalno.ofballs
20
⇒50 = total no. of balls
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