EXHIBIT 16 TO FORM 8-K March 25, 2002 Securities and Exchange Commission 450 Fifth Street, N.W. Washington, DC 20549 Commissioners: We have read the statements made by ANSYS, Inc. (copy atttached), which we understand will be filed with the Commission, pursuant to Item 4 of Form 8-K, as part of the Company's Form 8-K report dated March 19, 2002. We agree with the statements made concerning our Firm in such Form 8-K. Very truly yours, /s/ PricewaterhouseCoopers LLP PricewaterhouseCoopers LLP