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4vir4ik [10]
3 years ago
7

Terri has 7 pens in a box.

Mathematics
1 answer:
lora16 [44]3 years ago
6 0

a) I have attached an image of a probability tree diagram.

b) 0.02332 (please round to where you need)

The probability that Terri chooses a blue pen is 2/7. The probability that Terri chooses a red pen is 4/7. The probability that Terri chooses neither a red nor blue pen is 1/7.

2/7 x 4/7 x 1/7 = 0.02332

Hope this helps! :)

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