智力問(wèn)答:計(jì)算問(wèn)號(hào)處的數(shù)字

字號(hào):

1,2,5,13,34,(?)
    計(jì)算問(wèn)號(hào)處的數(shù)字是什么?
    A.47
    B.68
    C.77
    D.89
    【答案】
    答案:89=34*2+1+2+5+13