- AA
- BO
- CAB
- DB
Step-by-Step Solution
The mode is the category with the highest frequency: B occurs 11 times, more than A (9), O (7) or AB (3).
Answer: D) B
Blood groups of 30 donors at a camp in Lucknow were: A – 9, B – 11, AB – 3, O – 7. Which is the modal blood group?
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