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How many 4-digit numbers are there in which the first and last digits are the same?
There are 900 of them.
How many 3-digit numbers have exactly 2 digits that are the same?
1
How many four digit numbers are there which have exactly the same two digits.?
Any pair of digits (not including 0), can be used to generate 14 four-digit numbers. If one of the digits is 0, only seven will start with a non-zero digit.
How many numbers can be made from four digits when two are the same?
I assume you mean how many 4-digit numbers can be made from a set such as {A,A, B, C} where A, B and C are single digits. There are 12 such numbers.
How many four digit numbers can be formed out of 1234 without repeating any of the digits in the same number?
256
How many 4-digit numbers are there in which the first and last digits are the same?
There are 900 of them.
How many 3-digit numbers have exactly 2 digits that are the same?
1
How many four digit numbers are there which have exactly the same two digits.?
Any pair of digits (not including 0), can be used to generate 14 four-digit numbers. If one of the digits is 0, only seven will start with a non-zero digit.
What is the largest 6 - digit numbers with no digits the same?
987654
How many numbers can be made from four digits when two are the same?
I assume you mean how many 4-digit numbers can be made from a set such as {A,A, B, C} where A, B and C are single digits. There are 12 such numbers.
Do the quotients always have the same number of digits when dividing 3-digit numbers by 1-digit numbers?
2
How many six digit numbers can be formed using the digits 0123456789 Example equals 123456 or 098765?
The number of six digit numbers that you can make from ten different digits ifrepetitions of same digit on the six digit number is allowed is 1 000 000 numbers(including number 000 000).If no repetitions of the the same digit are allowed then you have:10P6 = 10!/(10-6)! = 151 200 different six digit numbers(six digit permutations form 10 different digits).
How many four digit numbers can be formed out of 1234 without repeating any of the digits in the same number?
256
How many 4 digit numbers can you make using 1234 without repeating any of the same digits?
24
How many four digit palindromic numbers are there?
The same as the number of two-digit numbers, since the last two digits must the same as the first two, only reversed. So I'll say there are 100 four-digit palindromes.
How many 3-digit numbers can be made using the digits 2 3 7 9?
-- 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.
How many ten digit palindromes are there?
90000. With 10 digit palindromes, the last 5 digits are the same as the first 5 digits in reverse, eg 12345 54321. So it comes down to how many 5 digit numbers are there? They are the numbers "10000" to "99999", a total of 99999 - 10000 + 1 = 90000.
