If today is Wednesday, what day was 3 days before 2 days after tomorrow?

Statements: All boys are students. Some students are intelligent. All intelligent are hardworking. Some hardworking are successful. Conclusion: Some boys are successful. Is this valid?

Statements: All teachers are educated. Some educated are experienced. All experienced are senior. Some senior are respected. Conclusion: Some teachers are respected. Is this valid?

Ram is taller than Shyam. Mohan is taller than Ram. Hari is shorter than Mohan. Who is tallest?

If P is the brother of Q, and R is the daughter of Q, how is P related to R?

If the day before yesterday was Thursday, what day is three days after tomorrow?