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The number of permutations of three numbers if any number can be repeated is 27 times (Formula is n3, i.e. 33, which is 3 x 3 x 3)

- 333
- 336
- 339
- 363
- 366
- 369
- 393
- 396
- 399
- 633
- 636
- 639
- 663
- 666
- 669
- 693
- 696
- 699
- 933
- 936
- 939
- 963
- 966
- 969
- 993
- 996
- 999

Q: How many 3 digit numbers can be made using 3 6 and 9 if digits can be repeated?

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There are 4 possible numbers if the digits are not repeated; 18 if they are. Those are 3-digit numbers, assuming that zero would not be a leading digit. If zero is allowed for a leading digit, then you can have 6 for the non repeated, and 27 if repetition.

48 of them if digits may not be repeated. 100 if they can.

You can make 4*4*4 = 64 numbers.

If you only use each digit once the number is 6 (it is a simple permutation and 3!=6). If you can repeat the digits there are 9 possible 3-digit numbers that start with 6, 9 that start with 7, and 9 that start with 8, giving you 27 possibilities.

Assuming no repeated digits, lowest first, 20; in any order 120; Allowing repeated digits: 216

Related questions

Using the digits of 1345678, there are 210 three digit numbers in which no digit is repeated.

There are 4 possible numbers if the digits are not repeated; 18 if they are. Those are 3-digit numbers, assuming that zero would not be a leading digit. If zero is allowed for a leading digit, then you can have 6 for the non repeated, and 27 if repetition.

48 of them if digits may not be repeated. 100 if they can.

24680 using only even numbers or 12346 which is an even number

You can make 4*4*4 = 64 numbers.

-- If the same digit may be repeated, then 64 can be made. -- If the same digit may not be repeated, then 24 can be made.

Since there are only five different digits, a 6-digit number can only be generated if a digit can be repeated. If digits can be repeated, the smallest 6-digit number is 111111.

If you're limited to only 5 digits that can't be repeated, then there are 120 ways they can be arranged.

151200 numbers.

There are twelve possible solutions using the rule you stated... 13,14,17,31,34,37,41,43,47,71,73 & 74

27 if the digits can be repeated. 6 if not.

If they can be repeated, 343 different numbers. If they can be used once each, there are only 210.