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Tina is 4 times older than Hanna. The sum of their ages is 40. How old is Hanna?
Answers: 2
Mathematics, 21.06.2019 22:50
If set d is not the empty set but is a subset of set e, then which of the following is true? d ∩ e = d d ∩ e = e d ∩ e = ∅
Answers: 1
Tina is 4 times older than Hanna. The sum of their ages is 40. How old is Hanna?...
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