a bag contains 3 red and 2 green balls the probability of choosing a red ball is helpme
Answers
Answer:
3 red balls
3 green balls
For drawing 3 balls of different colour in second draw, he can draw 1 or 2 ball of each colour in first draw. He can't draw 3 balls of same colour in first draw.
Case I- In first draw 1 red and 2 green ball picked up
2 red 1 green 3 blue balls in bag
chance that the 3 later balls being all of different colours =
6
C
3
1
C
1
∗2
C
1
∗3
C
1
=3/10
Case I- In first draw 2 red and 1 green ball picked up
red 2 green 3 blue balls in bag
chance that the 3 later balls being all of different colours =
6
C
3
1
C
1
∗2
C
1
∗3
C
1
=3/10
Total chances =6/10=60%3 red balls
3 green balls
For drawing 3 balls of different colour in second draw, he can draw 1 or 2 ball of each colour in first draw. He can't draw 3 balls of same colour in first draw.
Case I- In first draw 1 red and 2 green ball picked up
2 red 1 green 3 blue balls in bag
chance that the 3 later balls being all of different colours =
6
C
3
1
C
1
∗2
C
1
∗3
C
1
=3/10
Case I- In first draw 2 red and 1 green ball picked up
red 2 green 3 blue balls in bag
chance that the 3 later balls being all of different colours =
6
C
3
1
C
1
∗2
C
1
∗3
C
1
=3/10
Total chances =6/10=60%
ADD IT AS A BRAINLIST ANSWER
Answer: 3/5
Step-by-step explanation: total no of balls are 3+2=5
No of red ball=3
So by choosing 1 red ball probability is
3/5. ans