Refer to question above. Find the probabilty of choosing a blue or 4 ball
Give ya 10 points:)
2007-07-27 19:26:42 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
3/7 is blue
2/7 is a 4 ball
blue 4 ball is:
3/7 * 2/7 = 6/49
blue or 4 ball
4/7
2007-07-27 19:37:59 · answer #1 · answered by 037 G 6 · 0⤊ 0⤋
P(blue OR 4) = 1/7 + 3/7 = 4/7
2007-07-27 19:43:47 · answer #2 · answered by Helmut 7 · 0⤊ 0⤋
7 balls in all,4 Red numbered 1-4,3 blue numbered 3-5
Probabbility of picking a blue ball is 3/7
Probability of picking a red ball or a blue ball numbered 4 =2/7
2007-07-27 20:03:47 · answer #3 · answered by Avik D 2 · 0⤊ 0⤋
Technically, its as easy as finding the probability of NOT choosing RedBall-1, RedBall-2 or RedBall-3
P(of choosing Red Ball 1, 2 or 3) = 3/7
Therefore, your answer is: 1 - 3/7 = 4/7
2007-07-27 20:48:50 · answer #4 · answered by Anonymous · 0⤊ 0⤋
I think this is what you are looking for:
Blue ball : 3/7
No. 4 ball : 2/7
One ball is blue and no. 4 (can't count it twice) : 1/7
Probability = 3/7 + 2/7 - 1/7
Probability = 5/7 - 1/7
Probability = 4/7
2007-07-27 19:43:08 · answer #5 · answered by Sparks 6 · 0⤊ 0⤋
1. Assuming no balls were already in the bag, there are five "red or 5" balls of seven total balls. The probability is therefore 5 in 7, or about 71.43%. 2. Assuming no balls were already in the bag, there are four "blue or 4" balls of seven total balls. The probability is therefore 4 in 7, or about 57.14%.
2016-05-20 23:55:26 · answer #6 · answered by ? 3 · 0⤊ 0⤋
the chance of pulling out a blue ball is 3 out of 7, or about 43%. the chance of pulling out a 4 ball is 2 out of 7, or about 28.5%.
2007-07-27 19:36:28 · answer #7 · answered by Anonymous · 0⤊ 0⤋
That means that there is 3/7 or 42.86%
2007-07-27 19:39:19 · answer #8 · answered by pn 2 · 0⤊ 0⤋
you need to apply combination
2007-07-27 19:38:39 · answer #9 · answered by tHeo 2 · 0⤊ 0⤋