Mathematics, 06.04.2020 02:17 nicolashernandez347
If a universal set contains 250 elements, n(A) = 80, n(B) = 120, and n(A ∩ B) = 30, find n(A ∪ B)'
Answers: 3
Mathematics, 21.06.2019 21:10
Aplane intersects a pris paralel to the base of the prism. the cross section is a polygon wth eight sides. how many sides does the base of the prism have? a. 10 b. 8 c. 7 d. 9
Answers: 1
Mathematics, 21.06.2019 21:30
In a two-digit number the units' digit is 7 more than the tens' digit. the number with digits reversed is three times as large as the sum of the original number and the two digits. find the number.
Answers: 2
If a universal set contains 250 elements, n(A) = 80, n(B) = 120, and n(A ∩ B) = 30, find n(A ∪ B)'...
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