1 CONSENT OF INDEPENDENT ACCOUNTANTS We hereby consent to the incorporation by reference in the registration statements on Form S-8 (Nos. 333-00563, 333-01557, and 333-08371) of American Management Systems, Incorporated of our report dated February 18, 1998, appearing on page 24, of the 1998 Financial Report which is incorporated in this Annual Report on Form 10-K. We also consent to the incorporation by reference of our report on the Financial Statement Schedule, which appears on page 12 of this Form 10-K. PRICEWATERHOUSECOOPERS LLP Washington, D.C. March 26, 1999 60