For real numbers X, Y, Z and N

X < Y, if and only if (Y – X) > 0

If X < Y and Y < Z , then X < Z

If X < C then ( X + Z ) < ( Y + Z )

If X < Y, then – X > – Y

If X < Y, then

N = 0, then X.N = Z.N N < 0, then X.N > Y.N N > 0, then X.N < Y.N

If 0 < X < Y, then 0 < 1/X < 1/Y

The basic concept of inequalities is employed in-order to understand the intervals.

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