3.奇數(shù)奇數(shù)=偶數(shù)；偶數(shù)奇數(shù)=奇數(shù)；偶數(shù)偶數(shù)...偶數(shù)=偶數(shù),數(shù)學(xué)表達(dá)式為2k1，奇數(shù)可分為正奇數(shù)和負(fù)奇數(shù)01奇數(shù)是不能被2整除的數(shù)字,4.奇數(shù)--0/=偶數(shù)；偶數(shù)-奇數(shù)=奇數(shù)；奇數(shù)-偶數(shù)=奇數(shù),在整數(shù)中，不能被2整除的數(shù)叫做奇數(shù),奇數(shù)可分為正奇數(shù)和負(fù)奇數(shù)。1、什么叫奇數(shù)呢怎么理解奇數(shù)1。在整數(shù)中，不能被2整除的數(shù)叫做奇數(shù)。日常生活中，人們通常稱正奇數(shù)單數(shù)，與偶數(shù)相反。奇數(shù)可分為正奇數(shù)和負(fù)奇數(shù)。2.兩個(gè)連續(xù)整數(shù)中必須有一個(gè)奇數(shù)和一個(gè)偶數(shù)。3.奇數(shù)奇數(shù)=偶數(shù)；偶數(shù)奇數(shù)=奇數(shù)；偶數(shù)偶數(shù)...偶數(shù)=偶數(shù)。4.奇...