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Lostsunrise [7]
2 years ago
6

Give the area of each region of the square as well as the total area of the large square

Mathematics
1 answer:
pogonyaev2 years ago
4 0

Answers:

1) I: 4, II: 16, III: 64, IV:16

Total area: 100

2) I: 4, II: 6, III: 9, IV: 6

Total area: 25

3) I: 25, II: 10, III: 4, IV: 10

Total area: 49

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Answer:

<em>19800 seconds, or 330 minutes, or 5 hours + 30 minutes</em>

Step-by-step explanation:

<u>Number Permutations</u>

We know the phone number has 7 digits, 4 of which are known by Mark. This leaves him 3 digits to guess with. We also know the last one is not zero. The number can be represented as

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Where X can be any digit from 0 to 9 and Y can be any digit from 1 to 9. The first two can be combined in 10x10 ways, and the last one can be of 9 ways, this gives us 10x10x9 = 900 possible permutations.

If each possible number takes him 22 seconds, every possibility will need

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