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Gennadij [26K]
3 years ago
11

I NEED HELP !!!!!!!! 20 POINTS

Mathematics
1 answer:
Leto [7]3 years ago
7 0

Answer:

correct answer is 10

Step-by-step explanation:

a1 = 10 correct

a2 = 10+10 = 20

a3 =20+10 = 30..

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