These question are based on the following information.
The blood group of five persons—Gopi, Hari, Madhu, Sabha and John—O+, B+, AB+, B- and A- not necessarily in the same order. The blood groups of no two persons are the same. We know the following additional information.
Gopi's blood group is neither B+ nor AB+.
Madhu's blood group is either A- or O+.
Sabha's blood group is O+.
John's blood group is either B+ or B-.
What is Hari's blood group?
Show answer & explanation
Correct answer: C
Explanation
Given persons: Gopi, Hari, Madhu, Sabha, John
Given blood groups: O+, B+, AB+, B-, A-
• Sabha: Sabha's blood group is O+.
• Madhu: Madhu is either A- or O+. Since Sabha is O+, Madhu must be A-.
• Gopi: Remaining groups are B+, AB+, and B-. Gopi's blood group is neither B+ nor AB+, so Gopi must be B-.
• John: John's blood group is either B+ or B-. Since Gopi is B-, John must be B+.
• Hari: The only remaining blood group for Hari is AB+.
Therefore, Hari's blood group is AB+.