courtney's dad

This page lists questions and answers that were posted by visitors named courtney's dad.

Questions

The following questions were asked by visitors named courtney's dad.

hi all, thanks in advance for the help How many even integers between 4000 and 7000 have 4 different digits? So, started by knowing "even integers" so know the last of the four has to be one of 2,4,6,8 or 0. (this might be the last part of this whole ques...

how many 5-digit palindromes exist? i get 9*10*10*10*9=81000 is this correct? my thinking being that the first and last digit must be 1-9 and the other 3 0-9. thanks again for the time and effort. oh, and if any of you fine folks have the time could you b...

Answers

The following answers were posted by visitors named courtney's dad.

oops, meant "counting" and permutations

well, i think i've figured this one out finally. the answer should be 1*1*10*10*9 because the 1st and second digits only have one possible number once the 4th and 5th digit are set. thanks to all that took time to look at this one for me. a really tired d...