The high pressure situation makes things hard. In a recent interview, I turned P(A and B and C) = P(A) + P(B|A) + P(C|AB) rather than the product of the p

The high pressure situation makes things hard. In a recent interview, I turned P(A and B and C) = P(A) + P(B|A) + P(C|AB) rather than the product of the probabilities just because I was stressed, then got a nonsensical answer. Fortunately the interviewer just asked me to reconsider that line, but it was not a mistake I would normally make.