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How many 4 digit numbers have 6 as their second digit?
There are 9 digits that can be the first digit (1-9); for each of these there is 1 digit that can be the second digit (6); for each of these there are 10 digits that can be the third digit (0-9); for each of these there are 10 digits that can be the fourth digit (0-9). → number of numbers is 9 × 1 × 10 × 10 = 900 such numbers.
How many two digit numbers are there?
There are 90 two-digit numbers... starting with 10 and ending with 99.
How many three digit counting numbers are not multiples of 10?
There are 9*10*9 = 810 such numbers.
How many 3 digit numbers can be created if no digit can be repeated?
720 (10*9*8)
How many three digit numbers have the sum of their numbers equal to 5?
30,25,15,20, or 10.
How many 4 digit numbers have 6 as their second digit?
There are 9 digits that can be the first digit (1-9); for each of these there is 1 digit that can be the second digit (6); for each of these there are 10 digits that can be the third digit (0-9); for each of these there are 10 digits that can be the fourth digit (0-9). → number of numbers is 9 × 1 × 10 × 10 = 900 such numbers.
How many numbers exactly have 1 digit?
the right answer is 10 cause there is o,1,2,3,4,5,6,7,8,9 so there 10 numbers in total which have 1 digit
How many two digit numbers are there?
There are 90 two-digit numbers... starting with 10 and ending with 99.
How many 10 digit numbers can be formed using each digit once?
ten factorial = 10! = 3,628,800
If using 7 single digit numbers how many different combinations can you get?
Number of 7 digit combinations out of the 10 one-digit numbers = 120.
How many 2 digit numbers have no 2 at all?
72. (with the range of two digit numbers being from 10 to 99).
How many 2 digit numbers can be formed by adding two 1 digit numbers?
3
How many three digit counting numbers are not multiples of 10?
There are 9*10*9 = 810 such numbers.
How many three digit numbers are there?
There are 900 three digit numbers. (99 - 1000) (# of possible numbers in the first position = 9) (# of possible numbers in the second position = 10) (# of possible numbers in the third position = 10) 9 *10 *10 = 900
How many 3 digit numbers can be created if no digit can be repeated?
720 (10*9*8)
How many three digit numbers have the sum of their numbers equal to 5?
30,25,15,20, or 10.
How many sets of 3 numbers can be made out of 12 different numbers?
You can select 12 numbers for the first digit, 11 numbers for the second digit, and 10 numbers for the third digit; so 12*11*10 = 1320 sets of 3 numbers can be made out of 12 different numbers.
