SOLUTION: a*b=[{a+b}/5]-1 for all a,b in R,
1.is R closed?
2. is the operation commutative?
3. is the operation associative?
Algebra.Com
Question 1156540: a*b=[{a+b}/5]-1 for all a,b in R,
1.is R closed?
2. is the operation commutative?
3. is the operation associative?
Answer by ikleyn(52817) (Show Source): You can put this solution on YOUR website!
.
What is " R " in your post ?
To answer first question, it is NECESSARY to know WHAT this " R " is.
But your post does not define it . . .
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