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No, it is a rational number.

It that is meant to be the terminating decimal 0.1575757:

0.1575757 = 1575757/10000000

If that is meant to be the recurring decimal 0.1575757... with the 57 repeating forever:

0.1575757... = 1/10 + 57/990

= 156/990

= 26/165

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Q: Is 0.1575757. irrational number
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