Do questions in Kaplan step 1 qbook change with every edition?

[NeedToStudy]

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So I have and older edition of kaplan qbook I think it's about 10 years old. I was wondering if I should buy the new edition. Are the questions different?

 

[NeedToStudy]

Really? Nobody?

 

[Brain Bucket]

I've never seen a kaplan q book. Do all this extra stuff once you've finished the main qbanks.

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