Biology · Reproductive Health
A woman using the calendar (rhythm) method has regular menstrual cycles ranging from 27 to 30 days. Which is the first fertile day according to this method?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 110th day✓
- 29th day
- 37th day
- 45th day
Correct answer
10th day
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