SC and CR suggestion.

Hi everyone

I am starting verbal preparation from today onwards..Two years back i read Mgmat SC and power score CR.

Do i need to go through those books again? can i skimp? or just download some notes from gc club?

RC accuracy was good around 85- 90%.

Also practicing entire OG13,Verbal review 2nd edition are they enough or i need some unofficial questions too?

Thank you.

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