1×2=2, and 2 is the next number. 2×2=4, and 4 is the next number. 4×2=8, and 8 is the next number. 8×2= 16, so the next number is 16.
Mathematically, we call such a set of numbers "series". Finding a rule to fill in numbers is to observe the sequence first, then make strict logical reasoning, and then find the arrangement rule of numbers in the sequence.
Extended data:
law
1, arithmetic law: the difference between all two adjacent numbers is equal.
2. Law of multiples: All two adjacent numbers have the same multiple relationship.
3. Laws in laws: There is a certain law in the laws of two adjacent numbers.
4. Local laws: the laws of two adjacent numbers appear in cycles.