(a)[3]
Find the next term and the nth term for the sequence $\frac35,\frac47,\frac59,\frac6{11},\frac7{13},\ldots$.
(b(i))[2]
Find the nth term of the sequence $-1,-3,-5,-7,-9,\ldots$.
(b(ii))[2]
Find the nth term of the sequence $2,9,28,65,126,\ldots$.