Final answer:
Hanoi in Vietnam and Vientiane in Laos are north of 15° N latitude and east of 105° E longitude.
Step-by-step explanation:
Two cities that are located north of 15° north latitude and east of 105° east longitude are Hanoi in Vietnam and Vientiane in Laos. These cities are located in Southeast Asia and are significantly north of the equator and east of the prime meridian, fitting the given geographic criteria.