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- Two negative questions in the sixth grade mathematics volume
Two negative questions in the sixth grade mathematics volume
Snail 1 day plus one night * * * Crawl 3-2 =1m; The snail climbed to the wellhead during the day on the last day and stopped slipping.
So; Need: (17-3) ÷ (3-2)+1=14+1=15 days to climb to the wellhead.
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