An operation *is defined on the set of real numbers by a * b  = a + b + 1. If the identity element is –1 . Find the inverse of the element 2 under the operation

The identity element with respect to the multiplication shown in the table above is

A binary operation * is defined by a* b =a^b, If  a * 2 =2 – a. Find the possible value of a

Find the inverse of P under the binary operation defined by $p*q=p+q-pq$where p and q are real numbers and zero is the identity