List as many number sequences using four numbers 1,2,3,4,5,6,7,8, and 9 only once.
For example, 1,9,5,2 or 1,9,4,3.
Do not use two three or four of anysame number in any sequence.
Thank yoy!!!
2006-09-25 09:40:53 · 4 answers · asked by Anonymous in Education & Reference ➔ Homework Help
The 4 numbers also have to equal 17, sorry i left that out!
2006-09-25 10:13:24 · update #1
all you have to do is 1x2x3x4x5x6x7x8x9 and you get your answer on how many there are. it's a math trick
2006-09-25 09:54:11 · answer #1 · answered by pixiestix808@sbcglobal.net 1 · 1⤊ 0⤋
There will be a long list of four-number combinations. I don't think anyone will give you all of them. You might start with 1,2,3,4
and then keep the 1 in the first place until you use up all the combinations that start with one. It will take some time.
2006-09-25 16:47:41 · answer #2 · answered by PatsyBee 4 · 0⤊ 1⤋
there is approximitely 3024 combinations using 9 numbers only once (9*8*7*6=3024). That's alot of listing numbers!
2006-09-25 16:54:19 · answer #3 · answered by nighttrain551 4 · 0⤊ 1⤋
1234
1235
1236
1237
1238
1239
1245
1246
1247
1248
1249
1256
1257
1258
1259
1267
1268
1269
1278
1279
1289
1345
1346
1347
1348
1349
1356
1357
1358
1359
1367
1368
1369
1378
1379
1389
1456
1457
1458
1459
1467
1468
1469
1478
1489
1567
1568
1569
1578
1579
1589
1678
1679
1689
1789
2345
2346
2347
2348
2349
2356
2357
2358
2359
2367
2368
2369
2378
2379
2456
2457
2458
2459
2467
2468
2469
2478
2479
2489
2567
2568
2569
2578
2579
2589
2678
2679
2689
2789
3456
3457
3458
3459
3467
3468
3469
3478
3479
3489
3567
3568
3569
3578
3579
3589
3678
3679
3689
3789
4567
4568
4569
4578
4579
4678
4679
4689
4789
5678
5679
6789
2006-09-25 16:59:37 · answer #4 · answered by Jennifer 3 · 0⤊ 0⤋