I assume that your data is in Column-A. Place the cursor in A1 cell
and press Cntrl+Spacebar. Now the total column-A will be getting
selected and the A1 will be the Active cell (Active Cell will have a
white Background after selection).
Format>>Conditional Formatting>>Condition 1>>Formula Is>>
=COUNTIF(A:A,A1)=1
Then Click the Format command button and choose your desired Font and
Pattern colour.
This will highlight the Non Duplicate Values.
Press Add Command button to add another Condition
Condition 2>>Formula Is>>
=COUNTIF(A:A,A1)>1
Then Click the Format command button and choose your desired Font and
Pattern colour.
This will highlight the Duplicate Values.
Click Ok…
Hope it’s clear to you.