TGStat
TGStat
Type to search
Advanced channel search
English
Site language
Russian
English
Uzbek
Sign In
Catalog
Channels and groups catalog
Search for channels
Add a channel/group
Ratings
Rating of channels
Rating of groups
Posts rating
Ratings of brands and people
Analytics
Search by posts
Telegram monitoring
Элементар Математика
4 Jul, 16:54
Open in Telegram
Share
Report
2a+1 кўринишидаги тоқ соннинг квадрати T_a=1+2+...+a кўринишидаги учбурчакли соннинг 8 бараваридан 1 га ортиқ эканининг визуал исботи экан.
668
0
0
×
