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How many three digit numbers is average of three digits equal to 2?

21


What are positive 3-digit numbers?

Positive 3-digit numbers are any numbers between 100 and 999. They are not negative (no "-" sign in front) and are three digits.


How many 2-digit or 3-digit numbers can be formed using the digits 134568 and 9 which are diisible by 4?

48. Assuming no digit can be used more than once, the two digit numbers divisible by 4 are: 16, 36, 48, 56, 64, 68, 84, 96 8 of them. For any number to be divisible by 4, only the last two digits need be divisible by 4; so for three digit numbers, each of the two digit numbers above can be preceded by any of the remaining 5 digits and still be divisible by 4. → 5 x 8 = 40 three digit numbers are divisible by 4 → 40 + 8 = 48 two or three digit numbers made up of the digits {1, 3, 4, 5, 6, 8, 9} are divisible by 4. If repeats are allowed, there are an extra 2 two digit numbers (44 and 88) and each of the two digit numbers can be preceded by any of the 7 digits, making a total of 7 x 10 + 10 = 80 two and three digits numbers divisible by 4 make up of digits from the given set.


How many numbers are there between 100 and 999 in which all three digit numbers are different?

There are 9 possible numbers for the first digit (one of {1, 2, ..., 9}); with 9 possible digits for the second digit (one of {0, 1, 2, ..., 9} which is not the first digit)); with 8 possible digits for the third digit (one of {0, 1, 2, ..., 9} less the 2 digits already chosen); This there are 9 × 9 × 8 = 648 such numbers.


How many three digit numbers can be formed using 01234?

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

Related Questions

How many three digit numbers is average of three digits equal to 2?

21


What is a four digit number with ascending digits whose first two numbers have a difference of two the third digit is even and the sum of the first three digits equal the last digit?

1348.


How many three digit numbers equal 17?

There are no three-digit numbers that equal 17. In fact, there are no numbers with more or less than two digits that equal 17. In fact, in the whole infinite supply of numbers, there is only one single number that equals 17. That number is . . . . . . . 17 .


How many three digits are there in all?

There are 900 three-digit numbers.


What are the the 3 digit numbers using 1345678?

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


How many 3 digit numbers can be formed from the digits 357 with any digit repeated?

27 three digit numbers from the digits 3, 5, 7 including repetitions.


How many three digit numbers have no repeated digits?

757


What is the formula to find number of three digit numbers such that sum of the squares of any two digits is equal to third digit?

N squared would be used to find the square root of a number or numbers. In order to find the number of three digit numbers such that the sum of the square results of any two digits are equal to the third digit the use of the formula (HOE)squared=Hsquared*10000+2HE*100+Esquared is needed.


How many 3 digit number can be made using the digits 2 4 7 9?

24 three digit numbers if repetition of digits is not allowed. 4P3 = 24.If repetition of digits is allowed then we have:For 3 repetitions, 4 three digit numbers.For 2 repetitions, 36 three digit numbers.So we have a total of 64 three digit numbers if repetition of digits is allowed.


How is 102 smallest three digit number with unique digits?

There are only two smaller 3-digit numbers and both of them have repeated digits.


What is the probability of three digit numbers without repeated digits with numbers 0123456?

It is possible to create a 3-digit number, without repeated digits so the probability is 1.


How many different three digit numbers can be written using the digits 1 through 9?

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.