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By proving a summation formula, we enumerate the expan-sions for the mock theta functions of order 2 in terms of partial mocktheta functions of order 2, 3 and 6. We show a relation between Ramanu-jan's(q)-function and his sixth order mock theta functions. In addition,we also give the continued fraction representation for(q) and 2nd ordermock theta functions and Pade approximants.