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vichka [17]
2 years ago
7

SOMEONE ANSWER AND EXPLAIN ILL MARK BRAINLIEST THANK YOU!!!!!!!!!!!

Mathematics
1 answer:
PSYCHO15rus [73]2 years ago
8 0

Answer:

9: 21 handshakes

a: 21, 34, 55

b: 0, 1, 1, 2, 3, 5, 8, 13

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