Question

If a*b=2a+3b-ab, then the value of (3*5+5*3) is

Answer 1

(3*5)+(5*3)= [(2*3)+(3*5)-(3*5)]+[(2*5)+(3*3)-(5*3)]
= [6+15-15]-[10+9-15]
= 6+4= 10