Mark the correct alternative in the following:
If 
, then r is equal to
3r + r + 3 = 15 ( nCx = nCy ⇒ n = x + y or x = y )
4r + 3 = 15
4r = 12
r = 3
1
Mark the correct alternative in the following:
If , then r is equal to
3r + r + 3 = 15 ( nCx = nCy ⇒ n = x + y or x = y )
4r + 3 = 15
4r = 12
r = 3