The number that should most likely be his conjecture for the next number is 4.
Given that,
Based on the above pattern we can see that that each next number should be divided by 2.
So the next number should be 4 that comes from dividing 8 by 2.
Therefore we can conclude that the number that should most likely be his conjecture for the next number is 4.
Learn more about the number here: brainly.com/question/17429689