help me anyone?? i don't get it ​

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Answers 1

D = {S,E,C,T,I,O,N} 7

A = {math,science,a.p,filipino,e.s.p,t.l.e,english,mapeh} 8

R = {7,9,11,13,15} 5

oh and by the way the number beside the sets is the cardinality

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