问题
选择题
等差数列{an}中,a1=3,a100=36,则a3+a98等于( )
A.38
B.36
C.39
D.45
答案
等差数列{an}中,a1=3,a100=36,则a3+a98 =a1+a100=3+36=39,
故选C.
等差数列{an}中,a1=3,a100=36,则a3+a98等于( )
A.38
B.36
C.39
D.45
等差数列{an}中,a1=3,a100=36,则a3+a98 =a1+a100=3+36=39,
故选C.