0
81
As there are no limits stated then you can have a number comprising a repeated single digit (such as 2222), two pairs of numbers (e.g. 2244) or three different numbers (such as 2462).
The first digit can be one of any of the 3 numbers.
The second digit can be one of any of the three numbers, as can the third digit and also the fourth.
Then you can have 3 x 3 x 3 x 3 = 81 different 4-digit numbers using the three given numbers.
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∙ 11y ago
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How many 6 digit numbers can be formed using the digits 123456789?
There are 60480 numbers.
How many 3 digit numbers can be formed from the digits 12345 if the digits cannot be repeated?
1 set
How many six digits numbers can be formed using 1234?
There are 4^6 = 4096 such numbers.
How many four digits numbers can be formed using 0578?
If the digits are all different then 18. Otherwise, 192.
How many numbers of 3 digits and less than 500 can be formed from the integers 3 4 5 and 9 if the digits must be different?
12 numbers.
How many 5 digits numbers can be formed using digits?
99999
How many 4 digit numbers can be formed from digits 123456789?
5040 different 4 digit numbers can be formed with the digits 123456789. This is assuming that no digits are repeated with each combination.
How many 3 digit numbers can be formed from the digits 24578 if no digits can be repeated?
There are 5*4*3 = 60 such numbers.
How many 4 digit numbers can be formed from the digits 7341 if none of the digits can be repeated?
24
How many 5 digit numbers can be formed from the digits 012 if any of the digits can be repeated?
500
How many numbers of at least tree different digits can be formed from the integers 123456?
Numbers formed should be of at least 3 digits means they may be of 3 digits, 4 digits, 5 digits or 6 digits. There are 6 choices for digit in the units place. There are 5 and 4 choices for digits in ten and hundred’s place respectively. So, total number of ways by which 3 digits numbers can be formed = 6.5.4 = 120 Similarly, the total no.of ways by which 4 digits numbers can be formed = 6.5.4.3 = 360. the total no. of ways by which 5 digits numbers can be formed = 6.5.4.3.2 = 720. The total no.of ways by which 4 digits numbers can be formed = 6.5.4.3.2.1 = 720. So, total no.of ways by which the numbers of at least 3 digits can be formed = 120 + 360 + 720 + 720 = 1920.
How many 6 digit numbers can be formed using the digits 123456789?
There are 60480 numbers.
How many 4 digit numbers can be formed from the digits 1234567 with no duplicate numbers?
840
How many 4 digit numbers can be formed from the digits 123456789?
There are 3024 of them.
How many 3 digit numbers can be formed from the digits 102987?
180 of them.
How many 3 digit numbers can be formed from the digits 12345 if the digits cannot be repeated?
1 set
How many digits numbers each less than 500 can be formed from the digits 13467 if repetitions is allowed?
There are 5 numbers of 1 digit, 25 numbers of 2 digits, and 75 numbers of 3 digits. This makes 105 numbers in all.
