(2n-1)24... (2n);-|||-(6) ... (2n-1)(2n)(2n-2)... 2.-|||-3.写出四阶行列式中含有因子a11a 23的项.-|||-4.计算下列各行列式:-|||-4 1 2 4-|||-2 1 4 1-|||-3 -1 2 1

(2n-1)24... (2n);-|||-(6) ... (2n-1)(2n)(2n-2)... 2.-|||-3.写出四阶行列式中含有因子a11a 23的项

(2n-1)24... (2n) ;-|||-(6) ... (2n-1)(2n)(2n-2)... 2.-|||-3.写出四阶行列式中含有因子a11a23的项

(2n-1)24... (2n);（6）13... (2n-1)(2n)(2n-2)... 2.按自然数从小到大为标准次序，求下列排列的逆序数：（1）1234;

(2n-1)24 ... (2n); (6)13 ... (2n-1)(2n)(2n-2) ... 2.2.按自然数从小到大为标准次序，求下列各排列的逆序数：

(2n-1)... (2n);(6)13 ... (2n-1)(2n)(2n-2)... 2.2.按自然数从小到大为标准次序，求下列排列的逆序数：(1)1234

(2n-1)24... (2n)B 3421 C 2413... (2n-1)24... (2n)哪个是偶排列?B3421C2413

(2n-1)(2n)(2n-2)... 2 -

321;-|||-(4) ... (2n-1)(2n)(2n-2)... 642

2.写出四阶行列式中含有因子a11a 23的项.

(2n-1)(2n)(2n-2)... 2;-|||-(4) (n-1)... 1.