Are K6 and Skil Brum both located in Pakistan?
K6 (mountain):  This is a notable peak of the Masherbrum Mountains, a subrange of the Karakoram mountain range in Gilgit Baltistan region of Pakistan. Skil Brum: Skil Brum (Urdu: سکل برم‎ ), or Skilbrum, is a mountain in the Karakoram range in Gilgit–Baltistan, Pakistan, approximately 9 km (5 mi) west-southwest of K2.
yes