正数,16/7,49,3.1415,0.62,18,7又2/3
负数:-6又1/4,-10,-22/7,-2.3
非正数:-6又1/4,-10,-22/7,-2.3,0
非负数:16/7,49,3.1415,0.62,18,7又2/3,0
整数:49,-10,18,0,
非负整数,0,49,18
正数,16/7,49,3.1415,0.62,18,7又2/3
负数:-6又1/4,-10,-22/7,-2.3
非正数:-6又1/4,-10,-22/7,-2.3,0
非负数:16/7,49,3.1415,0.62,18,7又2/3,0
整数:49,-10,18,0,
非负整数,0,49,18