Loading…
Back to All Questions
@lofi-asteroid7115 hours agoUnited States
How do I know when an interviewer wants a precise number versus a rough estimate?
- Case Math
Sometimes I calculate exactly and waste time, and other times I round aggressively and worry I'm being too loose. How do I tell when the interviewer expects precision versus an estimate?
Similar Questions
I got the right case-math setup but used the wrong sign. How bad is that?
- Case Math
My formula was right, but I treated a cost reduction as negative and ended up with the opposite direction in the final number. I caught it when the interviewer questioned the result. How serious is that kind of error?
Oct 9, 2026United States
Top answer
Mayank G.Coach
Mayank G.CoachA sign error is still a calculation mistake, but catching and correcting it quickly is much better than carrying it through the case.
How can I prepare for a Bain interview if my math skills are very weak?
- Case Math
How can I prepare for a Bain consulting interview if my math skills are very weak?
Oct 1, 2026United States
Top answerMayank G.Coach
Mayank G.CoachPrioritize the math fundamentals that actually appear in cases, then practice explaining your setup clearly under time pressure.
If the interviewer gives me an assumption, should I still sanity-check it?
- Case Math
Sometimes the interviewer gives me a number or assumption directly, like average price or customer volume. I usually just plug it in. Should I ever question or sanity-check numbers that come from the interviewer?
Oct 9, 2026Belgium
Top answerMayank G.Coach
Mayank G.CoachUse interviewer-provided information as given unless there is a clear inconsistency or you need clarification about what the number represents.