A community for students.
Here's the question you clicked on:
 0 viewing
azlink10
 3 years ago
how many positive odd integers less than 70,000 can be represented using the digits 2,3,4,5,and 6
azlink10
 3 years ago
how many positive odd integers less than 70,000 can be represented using the digits 2,3,4,5,and 6

This Question is Closed

azlink10
 3 years ago
Best ResponseYou've already chosen the best response.0greaaaaat so nobody knows:(

Andras
 3 years ago
Best ResponseYou've already chosen the best response.0just looked at it now, thinking

dhatraditya
 3 years ago
Best ResponseYou've already chosen the best response.0you mean as a arithmetic combination of these numbers or does it mean like you can use only 2,3,4,5,6 to represent the number? like 23 is a valid number but 37 is not because it uses 7?

3pwood
 3 years ago
Best ResponseYou've already chosen the best response.0I'm sure there's some fancy statistics way to do this, but thinking about it the long way... For onedigit numbers: only 3 works so 1 For two digit numbers: 3 still has to be the second digit, but any of the 5 numbers can be first, so 5 For three digit numbers: 25, by similar logic for four: 125 for five: 625 for six: 3125 so 1 + 5 + 5^2 + 5^3 + 5^4 + 5^5 = 3906 I'm not totally sure of my method. That make good sense?

3pwood
 3 years ago
Best ResponseYou've already chosen the best response.0Oh woops, went one exponent too far. Sixdigit numbers don't qualify. so 1 + 5 + 5^2 + 5^3 + 5^4 = 781

Andras
 3 years ago
Best ResponseYou've already chosen the best response.0but 5 is an odd number too :)

3pwood
 3 years ago
Best ResponseYou've already chosen the best response.0Right...somehow didn't even see the 5. Apologies. What would that do?...it would mean that both 3 and 5 could be the last digit, and make for twice as many possibilities, right?

Andras
 3 years ago
Best ResponseYou've already chosen the best response.0not sure, but I think not

Andras
 3 years ago
Best ResponseYou've already chosen the best response.0I give up, it is too late here :) tomorrow I will give it another go if nobody solved it till then

3pwood
 3 years ago
Best ResponseYou've already chosen the best response.0I'm relatively confident that it's 781*2 = 1562, but I know my work is pretty sloppy.
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.