hard · GMAT Quant
Rook Foundry finishes a seven-region census of 46 pilots. Exclusive are rated on jets, are rated on turboprops, and a third mark are 9, 11, 6; exclusive pairs are 3, 3, 2; all-three is 3; none is 9.
How many pilots lie in exactly one of the three marks?
- 37
- 26
- 3
- 8
- 9
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