Question 675223
 Use a quantifier to make the following true or false, as indicated, where x is a natural number. x - 10 = 10 - x (make false) 
A) For x = 10, x - 10 = 10 - x.
True: 0 = 0
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B) At least one natural number x exists such that x - 10 = 10 - x.
2x = 20
x = 10
Ans: True
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C) There exists a natural number x such that x - 10 = 10 - x.
Ans: True, x = 10
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D) There is no natural number x such that x - 10 = 10 - x.
Ans: False
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Cheers,
Stan H.