Four pairs of letter-cluster have been given out of which three are alike in some manner, while one is different. Choose the odd one.

LTY

Option 1:  L(12), T(20), Y(25)

Option 2: D(4), F(6), P(16)

Option 3:  Z(26), H(8), J(10)

Option 4:  B(2), F(6), H(8)

According to alphabet series, the position of every alphabet series given in the option is even. Except option (1)

Therefore, option (1) is correct option.