Final answer:
The pain from a gastric or duodenal ulcer is felt in the upper abdomen, either in the middle or upper part for gastric ulcers and closer to the stomach for duodenal ulcers.
Step-by-step explanation:
The pain from a gastric ulcer or a duodenal ulcer occurs in the upper abdomen. For a gastric ulcer, the pain is usually felt in the middle or upper part of the abdomen, between the bellybutton and the breastbone. In the case of a duodenal ulcer, the pain typically occurs in the upper abdomen, often closer to the stomach.