Let {a,},{b,} be sequences of real numbers satisfying Ja,|s[b,| for all n 21. Then (a) Za, converges whenever Eb. converges (b) 2an converges absolutely whenever 2bn converges absolutely (c) 2b. converges whenever 2a. converges (d) 2b, converges absolutely whenever 2an converges absolutely If La, is absolutely convergent, then which na1 of the following is NOT true? (a) am→0 as n → ∞ men (b) Ea, sinn is convergent (e) Ž an is divergent (4) Ža; is divergent n=1

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