Brain Teasers
Bridge Players
At a family get-together, four married couples played bridge at two different tables (4 people at each table). From the statements below determine which players were at which table and who their partner was.
1. Mrs. Johnson was partnered with her son-in-law.
2. Mr. Jones' partner was his wife's brother-in-law.
3. Mrs. Jones played against her sister.
4. Mr. Johnson played against his father-in-law.
5. Mrs. Smith's partner was her daughter.
6. Mrs. Williams partner was her grandfather.
7. Mr. Johnson's partner was a man.
1. Mrs. Johnson was partnered with her son-in-law.
2. Mr. Jones' partner was his wife's brother-in-law.
3. Mrs. Jones played against her sister.
4. Mr. Johnson played against his father-in-law.
5. Mrs. Smith's partner was her daughter.
6. Mrs. Williams partner was her grandfather.
7. Mr. Johnson's partner was a man.
Answer
From statements 3, 5 and 6 the four couples consist of 3 generations since there is a set of sisters involved and there are grandparents present.From 2 and 3, the Jones are definitely one of the sisters, and from 6, the Williams are definitely on the 3rd generation. Looking at 1 and 4, the Johnson's are on the 2nd generation and since the Smiths have a daughter, they are on the 1st or 2nd generation. But since the Jones must be one of the sisters, the Smiths cannot fall in the 2nd generation with the Johnson's. Therefore the Smiths are the grandparents.
From 6, Mrs. Williams' partner is Mr. Smith. From 1 and 6, Mrs. Johnston and Mrs. Williams both have male partners, therefore from 5, Mrs. Smith's partner could have only been Mrs. Jones. Which also means that Jones and Johnson are the pair of sisters.
Thus from 2, Mr. Jones is then partnered with Mr. Johnson, and from 3, Mrs Jones (who is partnered with Mrs. Smith) is playing against Mrs. Johnson (whose partner is Mr. Williams from 1).
In summation, Mr. Jones and Mr. Johnson play against Mrs. Williams and Mr Smith, while Mrs Jones and Mrs. Smith play against Mrs. Johnson and Mr. Williams.
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