Saturday

August 23, 2014

August 23, 2014

Posted by **ciera** on Tuesday, January 23, 2007 at 9:55pm.

Try it yourself. You'll be surprised that it won't take very long to add up to 1,000.

To find the sum of the numbers from 1 to "n":

(1+n)(n/2)=sum

1001=(n^2+1)/2

2002=n^2+1

2001=n^2

n=44.7.....

So, 45 is the last number she would add.

- math -
**jasmin**, Thursday, October 11, 2012 at 8:35pm995

**Related Questions**

math - You have 2 digits, 2 numbers, reverse digits and 54 if the difference and...

Math - 10.Mr. Cartwright bought 2 7/8 pounds of grapes for his lunches. If he ...

math(adding mixed fractions) - please help me with (addition mixed fractions)i ...

algebra - One number is 4 times another. If the sum of their reciprocals is 5/36...

College Algebra - The sum of two numbers is less than 12. The second number is 8...

math - I am thinking of whole numbers. when I add them, their sum is 123. When I...

math - how do you add and subtract + and - numbers? Is there a rule? Yes. The ...

math - how to subtract numbers with decimals Line up the decimal points and ...

Math, grade 10 - Two whole numbers add to 17 and the sum of their squares is 185...

Calculator Help - Is there a difference between TI-89 Titanium calculator and ...