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129 A Study on the Conditions of Oscillation of Solutions of Second Order Impulsive Delay Differential Equations Muayyad M. Khalil College of Education, University of Tikrit Received on: 26/06/2011 Accepted on: 02/11/2011 ABSTRACT Oscillation conditions of second order impulsive delay differential equations with impulses are investigated, some sufficient conditions for all solutions to be oscillatory are obtained. Also, two examples are given to illustrate the applicability of the results obtained.