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Four Sisters Crossed Birth Month Settlement (Posted on 2023-08-05) Difficulty: 2 of 5
Four sisters, Sandra, Olivia, Natalie, and Dakota, were each born in a different one of the following months: September, October, November, and December.

"This is terrible," said Olivia one day. "None of us have an initial that matches the initial of her birth month."

"I don't mind at all," replied the girl who was born in September.

"That's easy for you to say," said Natalie. "I would at least have been pleased if the initial of my birth month was a vowel, but no."

In which month was each girl born?

See The Solution Submitted by K Sengupta    
Rating: 5.0000 (1 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
Solution computer solution | Comment 1 of 2
clearvars,clc
months='SOND';
sisters='SOND';
sisOrds=perms(sisters);
for i=1:length(sisOrds)
  sisOrd=sisOrds(i,:);
  if (sisOrd==months)==zeros(1,4)
    if sisOrd(1)~='O';
      if sisOrd(1)~='N'
        if sisOrd(2)~='N'
          disp(sisOrd)
        end
      end
    end
  end
end

finds

DSON

Dakota was born in September
Sandra was born in October
Olivia was born in November
Natalie was born in December

as 

the September birthday was not Olivia.
Natalie was born in neither September nor October.

That leaves only the given order among orders that match no names with the corresponding months.

  Posted by Charlie on 2023-08-05 11:27:08
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