They are 3 different books. (though the verbal one overlaps a bit with the Kaplan Premier
It is similar to asking if you should wear pants or just shoes and a shirt
If you already have pants (CAT tests and general gmat knowledge) then sure, just get shoes and a shirt (2 Kaplan
workbooks) - otherwise all 3.Kaplan Premier
comes with 5-6 CAT Tests and some good review for quant and general test strategies.
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