I have a multi what if:

[missikay03]

Sheet A:
If A7 can be found in Sheet 3 Column A and C12 can be found in sheet 3
Column 2 then give me the corresponding result in 3.

 

[Bob Phillips]

=IF(ISNUMBER(MATCH(1,(Sheet3!A2:A200=A7)*(Sheet3!B2:B200=C12),0)),INDEX(Sheet3!C2:C200,MATCH(1,(Sheet3!A2:A200=A7)*(Sheet3!B2:B200=C12),0)),"")

which is an array formula, it should be committed with Ctrl-Shift-Enter, not
just Enter.
Excel will automatically enclose the formula in braces (curly brackets), do
not try to do this manually.
When editing the formula, it must again be array-entered.

--
HTH

Bob

(there's no email, no snail mail, but somewhere should be gmail in my addy)