Question: fill in a same number
Answer: 4, [444 + 44 + 4 + 4 + 4 = 500]
Analysis: This level needs to be calculated by yourself. There is no skill to know in advance which number needs to be filled in.
Question: fill in a same number
Answer: 4, [444 + 44 + 4 + 4 + 4 = 500]
Analysis: This level needs to be calculated by yourself. There is no skill to know in advance which number needs to be filled in.