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					 Praveen correctly remembers that his father's birthday is after 21th May but before 27th May whereas his sister correctly remembers that their father's birthday is after 24th May but before 30th May. On which day in May was definitely their father's birthday?
 
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- 25th
 - 24th
 - 26th
 - 25th or 26th
 
 
Correct Option: D
According to Praveen - 22, 23, 24, ,25, 26
According to his sister - 25, 26, 27, 28, 29
So, Common  data is 25 or 26.