math
posted by Troy .
Which of the following is a disjunction?
Angela is fortythree.
Lisa will run a marathon and Lisa will compete in a triathlon.
Paul is at school or Paul is at home.
A spuare has four sides and four angles.

math 
bobpursley
A or B is a disjunction, if A cannot be anything else.
Sarah is a boy or Sarah is a girl. Disjunction.
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