SOLUTION: using the digits0,1,2,3,4,5,6,7,8,9, how many 7 digit numbers can be formedif the first digit cannot be 0 or 9 and if the last digit is greater than or equal to 2 and less than or

Algebra ->  Permutations -> SOLUTION: using the digits0,1,2,3,4,5,6,7,8,9, how many 7 digit numbers can be formedif the first digit cannot be 0 or 9 and if the last digit is greater than or equal to 2 and less than or       Log On


   

Question 770599: using the digits0,1,2,3,4,5,6,7,8,9, how many 7 digit numbers can be formedif the first digit cannot be 0 or 9 and if the last digit is greater than or equal to 2 and less than or equal to 3? Repeated digits are allowed. how does the calculation look. Thanks
Answer by Edwin McCravy(20056) About Me  (Show Source):
You can put this solution on YOUR website!
using the digits0,1,2,3,4,5,6,7,8,9, how many 7 digit numbers can be formedif the first digit cannot be 0 or 9 and if the last digit is greater than or equal to 2 and less than or equal to 3? Repeated digits are allowed. how does the calculation look. Thanks
There are 8 ways to choose the first digit as 1 thru 8
There are 10 ways each to choose the 5 middle digits as 0 thru 9
There are only 2 ways to choose the 7th digit as 2 or 3

Answer 8×105×2 = 1600000.

Edwin