Referenced from lesson Simple Inequalities (Spring, 2021)
Explore the functions in the Booleans Starter File. What characteristics define them as Booleans?
Fill in the blanks below so that each of the five functions returns true
1 is-odd( )
2 is-even( )
3 is-less-than-one( )
4 is-continent( )
5 is-primary-color( )
Fill in the blanks below so that each of the five functions returns false
6 is-odd( )
7 is-even( )
8 is-less-than-one( )
9 is-continent( )
10 is-primary-color( )
These materials were developed partly through support of the National Science Foundation,
(awards 1042210, 1535276, 1648684, and 1738598). 
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