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Masha, Pasha and Sasha all have a single-digit (0,1, ..., 9) lucky number. Pasha and Sasha have the same lucky number. Masha's number is different
- Masha, Pasha and Sasha all have a single-digit (0,1, ..., 9) lucky number.
- Pasha and Sasha have the same lucky number.
- Masha's number is different from that of Pasha and Sasha.
- Two of them put their names and the lucky numbers on the card.
How many cards with names and numbers different are possible?
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Prealgebra
Authors: Marvin L Bittinger, David J Ellenbogen, Barbara L Johnson
7th Edition
032164008X, 9780134347202
