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jok3333 [9.3K]
2 years ago
9

Greg has a bag of beads that contains 16 black, 20 red, and 4 white beads. He randomly picks a head places it back into the bag

and then randomly picks another one. What is the probability that he picks a black and white bead?
Mathematics
1 answer:
jasenka [17]2 years ago
8 0

Answer:

4%

Step-by-step explanation:

There are 40 beads in total(16+20+4=40). There are 16 black so the probability of getting a black is 16/40=2/5. Since you put the bead back the bag will still have 40 beads when you pick another one. There are 4 white beads so probability of getting a white is 4/40=1/10. Then we multiply these two probabilities 2/5 * 1/10=1/25=4%.


Note: Order does not matter.

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Answer:

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Step-by-step explanation:

The first box contains 4 items, 2 of each. This means there are \frac{2}{4} pens. This gives you a \frac{2}{4} chance of picking out a pen. This can be written as 50%.

The second box contains 8 items, 3 color pencils and 5 crayons. This means \frac{5}{8} of the contents are crayons, meaning you have a \frac{5}{8} or 62.5% chance of picking a crayon.

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**This content involves fractions, decimals and percentages, as well as basic probability, which you may want to revise. I'm always happy to help!

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