Choose the one which does not belong to the group

Here, the patter followed is:

Option I: 22 : 08 ⇒ 2² + 2² = 08

Option II: 24 : 20 ⇒ 2² + 4² = 20

Option III: 14 : 17 ⇒ 1² + 4² = 17

Option IV: 32 : 15 ⇒ 3² + 2² = 13 ≠ 15

Hence, option (4): 32 : 15 is not belongs to the group.