Answer :

D


9 – 2p = 5p – 5


9 + 5 = 5p + 2p


14 = 7p


p = 2


OR


an = a + (n - 1)d


185 = 5 + (n - 1) × 4


185 – 5 = 4n – 4


180 = 4n – 4


184 = 4n



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