The Order of above given series is
First term + Second term = Third term
⇒ 2 + 5 = 7;
Second term + Third term = Fourth term
⇒ 5 + 7 = 12;
Third term + Fourth term = Fifth term
⇒ 7 + 12 = 19;...
Fourth term + Fifth term = Sixth term
⇒ 12 + 19 = 32 , 31 should be 6th term because 12 + 19 = 31
So 32 is wrong. we get 31 as 6th term.
Fifth term + Sixth term = Seventh term
⇒ 19 + 31 = 50
