找规律填数:2,3,5,8,13,( ),34,( )

问题描述:

找规律填数:2,3,5,8,13,( ),34,( )
..

2,3,5,8,13,(21),34,(55)
每个数(从第三项起)都是前两个数的和,如:2+3=5 ,5+8=13 ,等.