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inequality find number of n intergers

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by scoobydooby » Wed Sep 24, 2008 3:27 am
no of integers: 4

1<5n+5<25
=1-5<5n<25-5
= -4<5n<20
-4/5<n<4

n should lie between -4/5 or -0.8 and 4. there are 4 integers within the limit: 0,1,2,3
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