Kalpana remembers that her mother's birthday is after 11th august but before 15th august and her brother ramesh remembers that the birthday is before 20th august but after 13th august. if both of them are correct, when is their mother's birthday?
Answers
Kalpana's mother's birthday is on 14 th August.
Given :
Kalpana remembers that her mother's birthday is after 11 August but before 15 th August .
Her brother remembers that the birthday is before 20 th August but after 13 th August.
Both are correct.
To find out :
When is their mother's birthday ?
Solution :
According to given information, Kalpana remembers that her mother's birthday is after 11 August but before 15 th August .
Her brother remembers that the birthday is before 20 th August but after 13 th August.
Both are correct .
This implies that their mother's birthday is between 11 and 20 th August.
Their mother's birthday can be on
12, 13, 14, 15, 16, 17, 18 or 19
According to kalpana as she remembers that her mother's birthday is after 11 and before 15 , this implies that their mother's birthday is on 12, 13, 14
According to her brother , their mother's birthday is on 14, 15, 16, 17, 18, 19
Now kalpana - 12, 13, 14
Her brother - 14, 15, 16, 17, 18, 19
the common date in both is 14 th August .
Hence their mother's birthday is on 14 th August.
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