Question

The identity element for the binary operation * defined on Q – {0} as a * b = `"ab"/2 AA  "a, b" in "Q" - {0}` is ____________.

विकल्प

• 1

• 0

• 2

• None of these

Answer 1

The identity element for the binary operation * defined on Q – {0} as a * b = `"ab"/2 AA  "a, b" in "Q" - {0}` is 2.