P P which is 12
Explanation: Pp
If you have some thing like x^2 + x + x^3 + x^2 the correct order would be x^3 + x^2 + x^2 + x.
Only Statement 2 is surely correct.
because there maybe chances that the line L1 and L3 lies above the line L2 and they can also fulfill the condition of perpendicularity so we can't be sure about statement 3 & statement 1 is clearly incorrect
List factors
63-1,3,7,9,21,63
36-1,2,3,6,12,18,36
45-1,3,5,9,15,45
72-1,2,3,4,6,8,9,12,18,24,36,72
Find biggest number in all of them...
The greatest common factor is 3