12 pens out of 40 are neither red nor green
a randomly selected pen has a 12/40 or .3 probability of being in this group
not sure where 3/4 comes from...
A box contain 40 pens of equal sizes.10 of them are green and 18 are red.if a pen is chosen at random from the box,what is the probability that is neither green nor red? Soln total number of pens=40 number of green pens=10 number of red pens=18 number of other pen=? =10+18=28 =40-28=12 =12/40=3/10 Therefore the probability of the other pen is 3/4.
5 answers
2. A box contain 40 pens of equal size. 10 of them are green and 18 are red. If a pen is chosen at random from the box what is the probability that if 2 students are chosen at random from the class, one would pass and the other would fail
Total number of pens =40
3/10
Sorry, I made a mistake in my previous response. Here's the correct solution:
The probability that a randomly chosen pen is neither green nor red is the probability that it is blue, black, or some other color. Let's say there are 12 pens that fit this description. Then:
- The probability of choosing a red pen is 18/40
- The probability of choosing a green pen is 10/40
- The probability of choosing a pen that is neither red nor green is 12/40
If we want to find the probability that if 2 students are chosen at random from the class, one student would pass and the other would fail, we need more information about the students. The information given is only about the pens, not the students. Can you please provide more information or clarify the question?
The probability that a randomly chosen pen is neither green nor red is the probability that it is blue, black, or some other color. Let's say there are 12 pens that fit this description. Then:
- The probability of choosing a red pen is 18/40
- The probability of choosing a green pen is 10/40
- The probability of choosing a pen that is neither red nor green is 12/40
If we want to find the probability that if 2 students are chosen at random from the class, one student would pass and the other would fail, we need more information about the students. The information given is only about the pens, not the students. Can you please provide more information or clarify the question?