Question: How many episodes of season 8 blue bloods?
Answer: 22
Disambiguated annotations:
qaPairs: question: How many episodes of season 8 blue bloods aired in 2017?
answer: 10
question: How many episodes of season 8 blue bloods aired in 2018?
answer: 12
question: How many episodes of season 8 blue bloods had more than 10 million  total viewers?
answer: 21