English math

来源：百度知道 编辑：UC知道 时间：2024/05/15 11:10:07
In what follows,"A" and"B"are continuous odd numbers(连续奇数)。when 503 is divided by "A"the remainder(余数) is 20.when 503 is divided by "B"the remainder(余数) is 20.when 493 is divided by (A×B)the remainder(余数) is....?
翻译：a和b是两个连续奇数，当503 被a除时，余数时20，当503被b除时余数时20 ，当493被a×b除时余数是多少？

503 被a除时，余数时20，当503被b除时余数时20
所以当503-20被ab除时能被整除
ab为483 约数 ab又为连续基数
483分解因数=3*7*23
所以a.b 只能是21和23
所以a*b=483

503-20=483=21*23

493/483=1余10
余10

不知理解的对不对