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Math Kangaroo 2015 — Student
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Andrea was born sometime in the year 1997 and her sister Charlotte sometime in the year 2001. What is known for certain about the age difference of the two sisters? It is…
A
less than 4 years
B
at least 4 years
C
exactly 4 years
D
more than 4 years
E
not less than 3 years
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