The operation `**` defined by `a ** b =(ab)/7` is not a binary operation on

Is * defined by a * b=(a+b)/2 is binary operation on Z.

Define a binary operation on a set

Show that the operation ** defined on RR-{0} by a**b=|ab| is a binary operation. Show also that ** is commutative and associative.

Is * defined by a^(*)b=(a+b)/(2) is binary operation on Z.

Define a binary operation on a set.

Define a binary operation on a set.

Which of the following is true? * defined by a*b=(a+b)/2 is a binary operation on Z (b) * defined by a*b=(a+b)/2 is a binary operation on Q (c) all binary commutative operations are associative (d) subtraction is a binary operation on N

Which of the following is true? * defined by (a) a*b=(a+b)/2 is a binary operation on Z (b) * defined by a*b=(a+b)/2 is a binary operation on Q (c) all binary commutative operations are associative (d) subtraction is a binary operation on N

On the set Q of all rational numbers an operation * is defined by a*b=1+ab. show that * is a binary operation on Q.

Define binary operation.