A:however
B:whatever
C:whichever
D:whenever
① 飞矢不动 ② 仁者见仁
③ 吐故纳新 ④ 青出于蓝而胜于蓝
设等差数列aπ的公差为d,前n项和为sπ,等比数列bπ的公比为q.已知b1=a1,b2=2,q=d,
s10=100.
(Ⅰ)求数列aπ,bπ的通项公式;
(Ⅱ)当d>1时,记cπ=aπbπ,求数列cπ的前n项和Tπ.