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How many 4-digit numbers can be formed by the digits 1 2 3 4 5 6 7 using each digit exactly once?
Wiki User
∙ 6y ago
840 As with any puzzle of this type, you need to work out how many ways there are of choosing the first digit. The you multiply that by the number of ways of choosing the second digit, then you multiply that by the number of ways of choosing the third digit, etc So, there are seven different digits available to be chosen for the first digit. Then there are six left to be chosen for the second.... and so on. This gives us 7 x 6 x 5 x 4 which equals 840.
Wiki User
∙ 6y ago
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How many 5 digits numbers can be formed using digits?
99999
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 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.
How many 5 digit numbers can be formed from the digits 012 if any of the digits can be repeated?
500
The total number of five digit numbers that can be be formed digits 12345 is?
It is 120 if the digits cannot be repeated.
How many 5 digits numbers can be formed using digits?
99999
How many 4 digit numbers can be formed from digits 123456789?
There are 7,290 different 4-digit numbers that can be formed from the digits 1-9 without repetition.
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 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 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.
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 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 3 digit numbers can be formed from the digits 12345 if the digits cannot be repeated?
1 set
The total number of five digit numbers that can be be formed digits 12345 is?
It is 120 if the digits cannot be repeated.
What number is 900 less than can be formed using all the digits?
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.
