安规律把数填完整21,24,24,24,27,24,30,24,33,(),().
问题描述:
安规律把数填完整21,24,24,24,27,24,30,24,33,(),().
答
24,36
奇数项为21,24,27,30,33,36
偶数项为24,24,24,24,24,24