MBB First Round Minor Math Mistakes....Potential to Move Forward

Will minor math mistakes in the case interview (like saying 40M instead of 400M, being corrected and guided by the interviewer, then getting to the correct answer) significantly hurt progression past 1st or 2nd round interviews? 

Any stories of getting offers or passing 1st or 2nd rounds with math mistakes in the case?

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If the error really was minor and caught (by you would have been best, but by the interviewer is ok) should not lead to a rejection by itself.

During my first rounds at BCG and Bain, I remember making a small mistake in one interview for each (maths both time): I was misunderstanding a cost bucket for an insurer (BCG) and I made a slightly inflated assumption for prices in a retail case (Bain). This was for a SA role at BCG and AC role at Bain, FT.

Neither were dramatic, my feedback was to be a little more careful with the maths and my assumptions moving forward. Which I did, and landed my Bain offer (I pulled out of BCG after passing R1 and being invited to R2).

 

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