Rational √n Percentages: 1 ≤ n ≤ 2000 & 1 ≤ n ≤ 10,000

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Homework Help Overview

The discussion revolves around determining the percentage of rational square roots of integers within specified ranges: 1 to 2000 and 1 to 10,000. Participants explore the nature of square roots and their rationality based on integer values.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants question how to define a measure for the set of integers to calculate percentages. There is discussion about the nature of perfect squares and their relation to rational square roots. Some members inquire about the largest integers whose squares are less than 2000 and how to count perfect squares within the range.

Discussion Status

The discussion is ongoing, with various interpretations being explored. Some participants have provided insights into counting perfect squares, while others express confusion about the calculations and definitions involved.

Contextual Notes

Participants note that calculators are not to be used, which may affect the methods of exploration. There is also a mention of disappointment regarding the clarity of responses and the accuracy of previous answers provided in the thread.

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What percentage of √n, where n E Z (n is an element of integers), are rational, where

a) 1 ≤ n ≤ 2000.

b) 1 ≤ n ≤ 10,000.

No idea how to go about this, any help?
 
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phospho said:
What percentage of √n, where n E Z (n is an element of integers), are rational, where

a) 1 ≤ n ≤ 2000.

b) 1 ≤ n ≤ 10,000.

No idea how to go about this, any help?


What is √(2000) ?

What is √(10,000) ?
 
SammyS said:
What is √(2000) ?

What is √(10,000) ?

20√5 and 100, I don't see where you're going with this. Also no calculators are to be used for future reference
 
phospho said:
20√5 and 100, I don't see where you're going with this. Also no calculators are to be used for future reference
Find the largest integer whose square is less than 2000 .

402 = 1600 .

502 = 2500 .

Look at 442 & 452 .
 
Before you can ask "What percentage of √n, where n E Z (n is an element of integers), are rational" you have to specify a measure on the set of integers. To find a percentage you have to have a ratio and to have a ratio here you need a size for each set.
 
phospho said:
What percentage of √n, where n E Z (n is an element of integers), are rational, where

a) 1 ≤ n ≤ 2000.

b) 1 ≤ n ≤ 10,000.

No idea how to go about this, any help?

If an integer does not have an integer square root, does it have a rational square root?

RGV
 
Ray Vickson said:
If an integer does not have an integer square root, does it have a rational square root?

RGV

No

HallsofIvy said:
Before you can ask "What percentage of √n, where n E Z (n is an element of integers), are rational" you have to specify a measure on the set of integers. To find a percentage you have to have a ratio and to have a ratio here you need a size for each set.

That's the whole question I have been given

SammyS said:
Find the largest integer whose square is less than 2000 .

402 = 1600 .

502 = 2500 .

Look at 442 & 452 .
oh I see, so I how would I go about finding the percentage?
 
phospho said:
No

That's the whole question I have been given

oh I see, so I how would I go about finding the percentage?
How many perfect square integers are there from 1 to 2000 ?

How many integers are there from 1 to 2000 ?
 
SammyS said:
How many perfect square integers are there from 1 to 2000 ?

How many integers are there from 1 to 2000 ?

So 2.2 and 1%?
 
  • #10
phospho said:
So 2.2 and 1%?

Yep.
 
  • #11
SammyS said:
How many perfect square integers are there from 1 to 2000 ?

How many integers are there from 1 to 2000 ?

phospho said:
So 2.2 and 1%?

These are not the answers to the questions that Sammy asked.
 
  • #12
Mark44 said:
These are not the answers to the questions that Sammy asked.
Thanks Mark.

I was also disappointed with OP's response, even though he/she did finally solve the given problem.
 
  • #13
Mark44 said:
These are not the answers to the questions that Sammy asked.

SammyS said:
Thanks Mark.

I was also disappointed with OP's response, even though he/she did finally solve the given problem.

Sorry to disappoint didn't really want to waste much more of your time as I got the answer,

How many perfect square integers are there from 1 to 2000 ? 44

How many integers are there from 1 to 2000 ? 2000

thank you again.
 
  • #14
Thanks for clarifying this, phospho. The reason for my comment was that a member might read this thread, and wonder how you determined that there were 2.2 perfect squares in the first 2000 integers.
 

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