Monday, December 1, 2014

Which of the following describes the union of the set of integers less than root20 and the set of integers greater than root 40?(a) no integers (b)...

The square root of 20 is approximately
4.5


Set A:  {integers less than
4.5}


Set A:  {4, 3, 2, 1, 0, -1, -2,
...}


The square root of 40 is approximately
6.3


Set B:  {integers greater than
6.3}


Set B:  {7, 8, 9, 10, 11, 12, 13,
...}


A `uu` B = {..., -2, -1, 0, 1, 2, 3, 4, 7, 8, 9, 10,
11, 12, 13, ...}


In other words, the solution is all
integers except of 5 and 6.


The answer is (D)
all but two integers.

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