Answers

2016-03-31T16:18:36+05:30
It means ...the number may any one between -17 and 19. You should exclude -17. Start from -16 and end at 18. Exclude 19 also. U should include -17 and 19 only if there is greater than or equal to and less than or equal to symbols. Draw a number line. U will understand better.
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