Advanced Filter should do what you want. Check the box for Unique records.
Look up in Help for more infor on how to use.

Warning! While it should do what you want, ensure that you back up your
workbook first in case it does not return expected results.

--
Regards,

OssieMac


"Soth" wrote:

I have a million lines. There are so many duplications number and cost and
I'd like to keep just ONE number and cost line of any duplication. The rest
of the duplications number will delete. Please see below. Your help with
formula is greatly appreciated.

Regards,
Soth

A B
Number Cost
65663 189,941.00
65663 189,941.00
65663 189,941.00
65663 189,941.00
65675 871,281.00
65675 871,281.00
65675 871,281.00
65675 871,281.00
65934 9,398,216.00
65934 9,398,216.00
65934 9,398,216.00
66430 458,388.00
66430 458,388.00