设数列{an}、{bn}都是等差数列,且a1=25,b1=75,a2+b2=100,则a37+b37等于( ...
问题详情:设数列{an}、{bn}都是等差数列,且a1=25,b1=75,a2+b2=100,则a37+b37等于( )A.0 B.37 C.100 D.﹣37【回答】.C【解析】∵数列{an}、{bn}都是等差数列,∴数列{an+bn}也是等差...
问题详情:设数列{an}、{bn}都是等差数列,且a1=25,b1=75,a2+b2=100,则a37+b37等于( )A.0 B.37 C.100 D.﹣37【回答】.C【解析】∵数列{an}、{bn}都是等差数列,∴数列{an+bn}也是等差...