12,16,14,15,( )A.13 B.29/2 C.17 D.20要求写解法.
问题描述:
12,16,14,15,( )A.13 B.29/2 C.17 D.20要求写解法.
答
(12+16)/2=14(16+14)/2=15(14+15)/2=14.5=29/2B
12,16,14,15,( )A.13 B.29/2 C.17 D.20要求写解法.
(12+16)/2=14(16+14)/2=15(14+15)/2=14.5=29/2B