Question

question

Answer 1

Using the digits \(1,2,3,4\) find sum of all possible 4 digit number without repetition.

Answer 2

example:
pretend we just had 1,2,3 instead...
are they saying they want:
123+132+213+231+312+321

Answer 3

yes

Answer 4

so I would do the same thing there
like start off with the 1 and do rearrangements of the others
we should wind up with adding 4(3)(2)(1) arrangements

Answer 5

24 things is a lot to add

Answer 6

this question should have trick

Answer 7

1234
1243
1324
1342
1432
1423

2134
2143
2314
2341
2413
2431

3124
3142
3214
3241
3412
3421

4312
4321
4213
4231
4123
4132

Answer 8

so for the one's column we would be adding 6 amount of 4's
and 6 amount of 3's and 6 amount of 2's and 6 amount of 1's

and so on for the other columns

Answer 9

6(1+4+3+2)

Answer 10

yeah

Answer 11

1column =60

Answer 12

we will have to carry the 6

Answer 13

6+60+600+6000

Answer 14

and we would have 60 again
but 60+6

Answer 15

6660