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Mathematics 7 Online
OpenStudy (anonymous):

Five women are sitting down to lunch. Ms. Osbourne is sitting between Ms. Lewis, and Ms. Martin. Ellen is sitting between Cathy and Ms. Norris. Ms. Lewis is between Ellen and Alice. Cathy and Doris are sisters. Betty is seated with Ms. Parkes on her left, and Ms. Martin on her right. Match the first names with the surnames. (Thinking Mathematically, page 29).

OpenStudy (akshay_budhkar):

Cathy and Doris are sisters??????????????? how is this relevant???????? there r five names Ellen Alice Cathy Doris Betty n five surnames Ms. Osbourne Ms. Lewis Ms. Martin Ms. Parkes Ms. Norris

OpenStudy (akshay_budhkar):

i guess theres some mistake in question.. plz check it dalvoron..lol also its confusing..

OpenStudy (dumbcow):

The fact that they are sisters is irrelevant and not needed to solve this. Its pure logic and deductive reasoning. Cathy = Ms. Lewis Alice = Ms.Osbourne Ellen = Ms.Parkes Betty = Ms. Norris Doris= Ms.Martin

OpenStudy (anonymous):

Maybe it's relevant, maybe it isn't!

OpenStudy (anonymous):

Dumbcow is not so dumb. Points!

OpenStudy (akshay_budhkar):

lol!! yes...

OpenStudy (anonymous):

I think the sisters bit is meant to confuse you into thinking they have the same surname, and make the puzzle longer.

OpenStudy (akshay_budhkar):

hi ishaan

OpenStudy (dumbcow):

:) i thought maybe one was married but then it would be Mrs.

OpenStudy (akshay_budhkar):

lol

OpenStudy (akshay_budhkar):

i was indeed dumb!!!!!!!!

OpenStudy (dumbcow):

anyway if you go through all the clues and look for contradictions and then eliminate possibilities along the way, eventually you will arrive at solution

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