All roses are flowers (true). Some flowers are red (true). But this doesn't guarantee roses are among those red flowers.

All doctors are professionals (given). Some professionals are not ethical (given). But it's possible that the unethical professionals are not doctors. Conclusion cannot be determined.

E is married to C. C is the child of A and B. B is the mother of C. Therefore, B is the mother-in-law of E.

The conclusion does not follow logically. Some electronic devices being expensive doesn't guarantee smartphones are included in that some.

X is sister of Y. Y is brother of Z (so Z is also sibling of X). Z is father of W. Therefore, X is aunt of W.

Odd values: 13(M), 21(U), 15(O), 1(A), 9(I) = 5 letters with odd position values.

Order: P-Q-S-R-T. Second from left is Q.

Being logical doesn't guarantee being creative. Some logical people are creative doesn't extend to all engineers.

Using position values: E=5, R=18, A=1, S=19, E=5, R=18.

Mother's only daughter is Anita herself. So Anita's mother is the person's grandmother, making the person her son.