modif task17.txt
Revert "modif task17.txt"

This reverts commit 1d58f590cbefe611e4064a57a1769f7f8e8c39a9.
Revert "Revert "modif task17.txt""

This reverts commit ad6714408abb45d2e3fcdc9f5f4b7a030fb1e731.