Page 54 - NUMINO Challenge_K2
P. 54
O-X Table
The following complex problem can be easily solved using a table.
Sue and Mark are friends with different last names that is either Kim or Park.
Sue does not have any friends whose last name is Park.
Last Kim Park Last Kim Park
Name
Name Name
Name
Sue
Sue
Mark Mark
Sue does not have any friends Therefore, Mark's last name is
whose last name is Park, but Mark Kim, and Sue's last name is Park.
is her friend, so his last name
cannot be Park.
EExxeerrcciissee Find my uncle and aunt's jobs by marking O or X in the
given table.
My uncle and aunt have different jobs. One is a
driver, and the other works in an office.
My aunt has never driven a car.
Job Office Driver
Relation Employee
Uncle
Aunt
51Problem Solving
The following complex problem can be easily solved using a table.
Sue and Mark are friends with different last names that is either Kim or Park.
Sue does not have any friends whose last name is Park.
Last Kim Park Last Kim Park
Name
Name Name
Name
Sue
Sue
Mark Mark
Sue does not have any friends Therefore, Mark's last name is
whose last name is Park, but Mark Kim, and Sue's last name is Park.
is her friend, so his last name
cannot be Park.
EExxeerrcciissee Find my uncle and aunt's jobs by marking O or X in the
given table.
My uncle and aunt have different jobs. One is a
driver, and the other works in an office.
My aunt has never driven a car.
Job Office Driver
Relation Employee
Uncle
Aunt
51Problem Solving
