24589可以组成哪几个4位数求列出来谢谢

Question

2 4 5 8 9可以组成哪几个4位数求列出来谢谢

Answer 1

P(5,4)=120（个）
2458,2459,2485,2489,2494,2495,2548,2549,2584,2589,2594,2598,2845,2849,2854,2859,2894,2895,2945,2948,2954,2958,2984,2985;
4258,4259,4285,4289,4294,4295,4528,4529,4582,4589,4592,4598,4825,4829,4852,4859,4892,4895,4925,4928,4952,4958,4982,4985;
5248,5249,5284,5289,5294,5298,5428,5429,5482,5489,5492,5498,5824,5829,5842,5849,5892,5894,5924,5928,5942,5948,5982,5984;
8245,8249,8254,8259,8294,8295,8425,8429,8452,8459,8492,8495,8524,8529,8542,8549,8592,8594,8924,8925,8942,8945,8952,8954;
9245,9248,9254,9258,9284,9285,9425,9428,9452,9458,9482,9485,9524,9528,9542,9548,9582,9584,9824,9825,9842,9845,9852,9854;