Radha is the new child of Ramu and Raju. One day, they both asked Radha for her birthday. After consulting one, Radha said, I'm not going to say, but give you a clue. Radha then handed them a list of 10 dates and said, "My birthday is one of these dates".
July 14, 16 July
May 15, May 16, and May 19
June 17th, June 18th
Aug. 14, Aug. 15, Aug. 17
Then she told Ramu's ear only the month of her birthday. Likewise, Raju's ears were told only on the day of birth. Then he asked Ramu "Did you get the grip?"
Ramu: "I don't know, but I'm sure Raju doesn't know either."
Raju: "I didn't know until Ramu said this, but now I know."
Ramu: "Now I got it"
Q: What date is Radha's birthday given above?
Answers
Given : list of 10 Dates . and month told to Ramu and date told to Raju
To find : Exact Date of Birth
Solution:
Dates
MAY 15 , 16 , 19
JUNE 17 , 18
JULY 14 16
AUGUST 14 , 15 , 17
Ramu knows month only so Ramu does not know the correct date of birth
but Ramu say Raju also do not know the correct date of birth
hence the Month known to Ramu does not have unique date
19 or 18
hence MAY & JUNE can not be Month
So now Raju knows that
Month is JULY or AUGUST only ( which was not known to him earlier)
14 Can not be date as then Raju would not know which month ( July or august)
Hence possible date are 16 JULY , 15 AUGUST & 17 AUGUST
but now Ramu says he also know date of birth
it means month is not august as if it would have been august then Ramu could not know which date
Hence 16 JULY is the DOB
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Given : list of 10 Dates . and month told to Ramu and date told to Raju
To find : Exact Date of Birth
Solution:
Dates
MAY 15 , 16 , 19
JUNE 17 , 18
JULY 14 16
AUGUST 14 , 15 , 17
Ramu knows month only so Ramu does not know the correct date of birth
but Ramu say Raju also do not know the correct date of birth
hence the Month known to Ramu does not have unique date
19 or 18
hence MAY & JUNE can not be Month
So now Raju knows that
Month is JULY or AUGUST only ( which was not known to him earlier)
14 Can not be date as then Raju would not know which month ( July or august)
Hence possible date are 16 JULY , 15 AUGUST & 17 AUGUST
but now Ramu says he also know date of birth
it means month is not august as if it would have been august then Ramu could not know which date
Hence 16 JULY is the DOB
Learn more:
Steve taking Bus
brainly.in/question/16445921
timing of bus
brainly.in/question/16496302
Solve this ! Vikram and Muthu befriended a girl.
brainly.in/question/1642767
https://brainly.in/question/16377245