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| Question 1091421:  If –2 < a < 11 and 3 < b < 12, then which of the following is NOT true?
 (A) 1 < a+b < 23
 (B) -14 < a-b < 8
 (C) -7 < b-a < 14
 (D) 1 < b+a < 23
 (E) -24 < ab < 132
 
 Answer by ikleyn(52879)
      (Show Source): 
You can put this solution on YOUR website! . If –2 < a < 11 and 3 < b < 12, then which of the following is NOT true?
 
 
 
(A) 1 < a+b < 23 
(B) -14 < a-b < 8
(C) -7 < b-a < 14    <<<---===  This one is NOT true.
(D) 1 < b+a < 23
(E) -24 < ab < 132
 
 For your info:
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 I edited your post to make it readable.
 
 In the future,  when you use inequality symbols  "<"  and/or  ">",  make the blank space before and after them to make your formulas readable.
 
 
 
 
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