Statement: Some radios are telephones. All telephones are mirrors. All mirrors are desks. Conclusions: I. Some radios are desks. II. Some radios are mirrors. III. Some desks are telephones.

Some radios are telephones + All telephones are mirrors = I + A = I = Some radios are mirrors Hence II follows Some radios are mirrors + All mirrors are desks = I + A = I = Some radios are desks Hence I follows. All telephones are mirrors + All mirrors are desks = A + A + = All telephones are desks → conversion → Some desks are telephones (I). Hence III follows.