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#1 |
"Chereztynnoguzakidai"
Oct 2022
Ukraine, near Kyiv.
2·33 Posts |
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for example, for any n>0
Explain. Find relations for a and b) |
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#2 |
Feb 2017
Nowhere
13·487 Posts |
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#3 |
"Bo Chen"
Oct 2005
Wuhan,China
23×23 Posts |
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b|a*(a-1)
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