111 + 222 = 333
222 + 333 = 555
333 + 444 = 777
There are nearly 100,000 different correct answers to this question.
45
99999
You can select 9 numbers for the first digit, 8 numbers for the second digit, and 7numbers for the third digit; so 504 (e.g. 9*8*7) different three digit numbers can be written using the digits 1 through 9.
Using the digits of 1345678, there are 210 three digit numbers in which no digit is repeated.
There are 3,265,920 numbers that can be formed using all the digits. The answer to the question will depend on which one of these.
45
99999
You can select 9 numbers for the first digit, 8 numbers for the second digit, and 7numbers for the third digit; so 504 (e.g. 9*8*7) different three digit numbers can be written using the digits 1 through 9.
0000 0001 0002 ... 9998 9999
36 two digit numbers can be formed...(:From Rafaelrz: The question can be stated as;how many permutations of two different digits can beobtained from a set of six different digits ?Answer:nPr equals n!/(n-r) ...... for n = 6, r = 26P2 equals 6!/(6-2)! equals 30 Permutations.
depends on your answer
There are 60480 numbers.
Using the digits of 1345678, there are 210 three digit numbers in which no digit is repeated.
There are 4^6 = 4096 such numbers.
There are 3,265,920 numbers that can be formed using all the digits. The answer to the question will depend on which one of these.
If the digits are all different then 18. Otherwise, 192.
= Select a significant year like the year in which you were born or a historical year like 1776 The create the numbers 1 through 50 using each of the digits in that year exactly once? =