Statements: Some carbons are oxygens. Some carbons are hydrogens. Conclusions: I. All oxygens are hydrogens. II. Some oxygens are not hydrogens. Decide which of the given conclusions logically follows from the statements.

Statements: M. Some pears are tomatoes N. No biscuits are pears Conclusions: X. Some tomatoes are not biscuits Y. Some tomatoes are pears

Statements: 1. No school is an institution, but they are establishments. 2. All establishments that are not institutions have buildings. Conclusions: I. Schools are not establishments. II. All schools have buildings. III. Schools do not have buildings.