(c) If lim |an+1| = 1 then then > Jan| is convergent. |anl n=1 00 (d) >lan| converges then > ang converges where (an) is any subsequence of (am) n=1 n=1 (e) Assume that for all n E N, an < b2n and an < b2n+1· If On converges then an converges. n=1

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