确定i,j使(1)127456j9为奇排列;(2)1i25j4897为偶排列.

确定i,j使
(1)127456j9为奇排列;(2)1i25j4897为偶排列.
【正确答案】:解(1)由于(127435689)=5,所以i=3,j=8;
(2)由于τ(132564897)=5,所以=6,j=3.