so xyz - zyx= so chia chan cho 7, co bao nhieu so, biet rang x,y, z>0?
so xyz - zyx= so chia chan cho 7, co bao nhieu so, biet rang x,y, z>0
toi can giang cho chau'
thanks
More Questions From This User See All
so xyz - zyx= so chia chan cho 7, co bao nhieu so, biet rang x,y, z>0
toi can giang cho chau'
thanks
Copyright © 2024 VQUIX.COM - All rights reserved.
Answers & Comments
Verified answer
xyz-zyx = (x-z).1000+z-x
=999.(x-z)
Vay: x-z chia het cho 7. Suy ra: x=9, z=2, hoac x=8, z=2. Do y la tuy y. Nen co 18 truong hop.
không hiá»u câu há»i lắm, sá»a lại cho rõ bạn Æ¡i !