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2015-11-06T20:00:34+05:30

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Q1 :        3.

Q2:    5 five:  SN 185, SN1006, SN1054, SN1572, SN1604
                     the numbers are the years

but actually it seems, it is possible that there three supernova explosions in each century in our galaxy of Milkyway.

2 5 2
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