- A11
- B41
- C42
- D40
Step-by-Step Solution
September has 30 days, so from 20 September to 30 September is 10 days, and 31 more reach 31 October: 10 + 31 = 41. (42 counts the first day too; 11 subtracts the dates and forgets the month.)
Answer: B) 41
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