5. (7 points) The 11th summit of the G20 leaders was held in Hangzhou, China from September 4 to 5, 2016. The G20 is an international economic cooperation forum, with 20 members from Asia, Europe, Africa, Oceania, and America. Among them, Asia has the most, Africa and Oceania have the same and the least, and the number of members from America, Europe, and Asia are consecutive natural numbers. Then the number of members from Asia in the G20 is . $\qquad$
【Answer】Solution: According to the problem, the number of members in America is in the middle, and $20 \div 5=4$ (people), so America has 4 or 5 members,

When America has 4 members, Europe has 5 members, and Asia has 6 members, the total number of members in these three continents is $4+5+6=15$ (people), so the total number of members in Africa and Oceania is $20-15=5$ (people), and since the number of members in Africa and Oceania is the same, the sum of the members in these two continents must be an even number, so this situation does not meet the requirements and is discarded. When America has 5 members, Europe has 6 members, and Asia has 7 members, the total number of members in these three continents is $5+6+7=18$ (people),

So, the total number of members in Africa and Oceania is $20-18=2$ (people), and since the number of members in Africa and Oceania is the same,

The sum of the members in these two continents must be an even number, at this time, Africa and Oceania each have 1 member, so, Asia has 7 members, the answer is: 7.