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just olya [345]
3 years ago
8

How many 3 digit numbers have exactly 2 digits that are the same

Mathematics
1 answer:
densk [106]3 years ago
7 0

Answer:

I believe 252

Step-by-step explanation:

Answer: 9+3×9×9 = 9+243 = 252 possible 3-digit numbers with at least

2 digits the same.


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From the graph,
When x = 1, y = 0.5
Therefore, b = 0.5


To confirm this

From the graph,

When x = -1, y = 2
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Since y = b^x
4 = b^-2
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b = √(1/4)
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