等差数列{an}中,a2=9,a5=33,{an}的公差为_.

问题描述:

等差数列{an}中,a2=9,a5=33,{an}的公差为______.

∵等差数列{an}中,a2=9,a5=33,

a1+d=9
a1+4d=33

解得a1=1,d=8.
故答案为:8.