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Question

The following relation is defined on the set of real number:

State the whether given statement is true or false
(ii)aRb|a||b|
The following relation is
(Reflexive,not symmetric, transitive.

A
True
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B
False
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Solution

The correct option is A True
Let aRb|a||b|
Reflexivity:
We can write |a||a| (As every number is greater or equal to itself.)
aRa
Hence, R is reflexive.
Symmetry:
Let aRb
|a||b|
We cannot write this as |b||a|
Hence, b is not related to a
Hence, R is not symmetric.
Transitivity:
Let aRb,bRc
|a||b|;|b||c|
|a||c|
aRc
Hence, R is transitive.

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