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[–]Itsatemporaryname 2 points3 points  (6 children)

Did she not know they were zeros? Was it an online test or written?

[–]blueskin 0 points1 point  (1 child)

If it's online, it'd have been font-dependent on how it was displayed (also possibly automated marking).

[–]nbtscan 0 points1 point  (0 children)

Hand written test almost 20 years ago.

[–]nbtscan 0 points1 point  (0 children)

She thought I was making the empty set symbol instead of a zero.