KCET2009MathematicsMathematical Reasoning
On the set of all natural numbers N , which one of the following * is a binary operation?
Options
- Aa * ~b = ab
- Ba * b= a-b a+b
- Ca * b=a+3 b
- Da * b=3 a-4 b
Correct answer
C. a * b=a+3 b
Step-by-step solution
Since, a, b N , a * ~b = a +3 ~b N Hence, option (c) is correct.