công thức excel

[minghng]

Hi All
Ban minh co giup lam cong thuc validation de kiem tra so theo thu tu cong tiep theo va khong lap lai. neu khong thoa man thi bao loi
Tuy nhien minh muon cong thuc kiem tra luon sheet truoc. nho cac ban chinh lai gium
=AND(COUNTIF($E$3:E11,E11)=1,IFERROR(E11=LOOKUP(2,1/($C11=$C$3:$C10),$E$3:$E10)+1,TRUE))
cong thuc validation trong o Ticket No
Thank You

 

[bebo021999]

Hi All
Ban minh co giup lam cong thuc validation de kiem tra so theo thu tu cong tiep theo va khong lap lai. neu khong thoa man thi bao loi
Tuy nhien minh muon cong thuc kiem tra luon sheet truoc. nho cac ban chinh lai gium
=AND(COUNTIF($E$3:E11,E11)=1,IFERROR(E11=LOOKUP(2,1/($C11=$C$3:$C10),$E$3:$E10)+1,TRUE))
cong thuc validation trong o Ticket No
Thank You

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