medium · GMAT Quant
Kestrel Yard has 41 accounts: 16 in X, 18 in Y, 15 in Z. Pairwise overlaps (including the triple) are 5, 6, and 4, and 2 are in all three. An unused fourth group is named in a footnote.
How many are in at least one group?
- 5
- 49
- 2
- 36
- 41
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