Mathematics, 29.01.2021 16:20, u8p4
Suppose U is a set containing 75 elements and that A1, A2, A3 and A4 are subsets of U such that each subset Ai contains 28 elements, the intersection of any two of the four subsets contains 12 elements, the intersection of any three of the four subsets contains 5 elements,
and the intersection of all four subsets contains 1 element.
a. What is |A1 βͺ A2 βͺ A3 βͺ A4|?
b. How many elements belong to exactly two of the four subsets?
Answers: 2
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Julie buys 2kg of apples and 7kg of pears ? 12.70. the pears cost ? 1.30 per kilogram what is the price per kilogram of the apples? show your working out
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What would be the reasons for lines 3 and 4? a. addition property; subtraction property b. addition property; solve c. substitution property; subtraction property d. substitution property; prove
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Suppose U is a set containing 75 elements and that A1, A2, A3 and A4 are subsets of U such that each...
History, 12.10.2019 06:30
Mathematics, 12.10.2019 06:30
History, 12.10.2019 06:30