找规律 五年级1 1 1 1 2 1 1 3 3 1 1 4 6 4 1继
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![找规律 五年级1 1 1 1 2 1 1 3 3 1 1 4 6 4 1继](/uploads/image/z/4484493-45-3.jpg?t=%E6%89%BE%E8%A7%84%E5%BE%8B+%E4%BA%94%E5%B9%B4%E7%BA%A71+++++++++++++++++++++++++++++++++++++++++++++++++1+++1+++++++++++++++++++++++++++++++++++++++++++++++1+++2++1+++++++++++++++++++++++++++++++++++++++++++++++1++3+++3++1++++++++++++++++++++++++++++++++++++++++++++1++4++6++4+++1%E7%BB%A7)
找规律 五年级1 1 1 1 2 1 1 3 3 1 1 4 6 4 1继
找规律 五年级
1
1 1
1 2 1
1 3 3 1
1 4 6 4 1
继续写三行数字是什么?
找规律 五年级1 1 1 1 2 1 1 3 3 1 1 4 6 4 1继
1 1
1 2 1
1 3 3 1
1 4 6 4 1
1 5 10 10 5 1
1 6 15 20 15 6 1
1 7 21 35 35 21 7 1
规律:两侧全部为 1,里面所要填的每个数,是其上面的两个数之和.
例如:第四行第三个数6,是它上面的两个数(第三行的3 3 )之和.
1 5 10 10 5 1
1
1 1
1 2 1
1 3 3 1
1 4 6 4 1
1 5 8 9 8 5 1