1269,999,900,330,()A 190 B 270 C 299 D 1900求规律
问题描述:
1269,999,900,330,()
A 190 B 270 C 299 D 1900
求规律
答
1269=999+900*3/10
999=900+330*3/10
900=330+1900*3/10