Answer:
1. 3/14
2. 2/7
3. 1/7
4. 5/14
5. 11/14
6. 9/14
Step-by-step explanation:
first get the total number of pens
3 red pens + 4 blue pens + 2 black pens + 5 green pens =
14 total number of pens
1. What is the probability that the pen chosen red?
3 red pens out of a total of 14 pens = 3/14
2. What is the probability that the pen chosen is blue?
4 blue pens out of a total of 14 pens = 4/14 -> simplified -> 2/7
3. What is the probability that the pen chosen is black?
2 black pens out of a total of 14 pens = 2/14 -> simplified -> 1/7
4. What is the probability that the pen chosen is green?
5 green pens out of a total of 14 pens = 5/14
5. What is the probability that the pen chosen is NOT red?
of the 3 red pens, 4 blue pens, 2 black pens and 5 green pens
4 blue pens, 2 black pens and 5 green pens are NOT red
4 blue pens + 2 black pens + 5 green pens =
11 total number of pens that are NOT red
11 total number of pens that are NOT red out of a total of 14 pens = 11/14
6. What is the probability that the pen chosen is NOT green?
of the 3 red pens, 4 blue pens, 2 black pens and 5 green pens
the 3 red pens, 4 blue pens, 2 black pens are NOT green
3 red pens + 4 blue pens + 2 black pens =
9 total number of pens that are NOT green
9 total number of pens that are NOT green out of a total of 14 pens = 9/14
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