Charly had 16 followers on instagram last week. now he has 6. what is the percent change?

1 answer:

7 0

He lost six. He had sixteen.

He lost 6/16 followers.
That's 6/16*100=37.5 percent.
Since it's a loss, the percent change is -37.5%

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$(^6 _2)=\frac{6!}{2! (6-2)!}=\frac{6!}{2! \times 4!}=\frac{4! \times 5 \times 6}{2 \times 4!}=\frac{5 \times 6}{2}=\frac{30}{2}=15$
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Using the rule of product, you can calculate that you can choose 1 girl and 2 boys in 4×15=60 ways.

The probability of choosing 1 girl and 2 boys is the number of ways you can choose 1 girl and 2 boys divided by the number of ways you can choose 3 people from the group.
$P=\frac{60}{120}=\frac{1}{2}=50\%$

The probability is 1/2, or 50%.

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