the probability that my team scores a goal is 4/7 . what is the probability that my team does not score a goal. another question? = mary has a bag cntaining 60 marbles. 20 are blue 16 are green and the rest are either red or yellow.
a] calculate the probability that the selected marble will be blue.
b]what is the probability that the selected marble will bb green?
c]the probability of picking a red marble is 1/6. how many marbles are red?
d]the rest of marbles are yellow . what is the probability of picking a yellow one?
Maths problem help me?
- Posted:
- 3+ months ago by sheldonking
- Topics:
- question, math, maths
Details:
Answers (2)
1. If the probability of scoring a goal is 4/7, then the probability that the team does NOT score a goal is 1 - 4/7 = 3/7
2.
a) 20 are blue, so the probability is 20/60 = 1/3
b) 16 are green, so the probability is 16/60 = 4/15
c) probability is 1/6 = 10/60 -> 10 out of 60 are red
d) subtract every given number from 1 (100%) -> 1 - 20/60 (blue) - 16/60 (green) - 10/60 (red) = 14/60 -> yellow ones (14)
Try practisitng some exercises then you'll get better soon. ;)