Monday

July 28, 2014

July 28, 2014

Posted by **Krisy** on Sunday, August 27, 2006 at 7:53pm.

1 2 3 4 5 6........100

2 4 6 8 10 12 ......200

3 6 9 12 15 18 ......300

.

.

.

100 200 300 400 500 600 . . . 100(x)100

Can anyone help me??

I'll suggest how to solve this, but you'll need to do the calculating yourself.

Observe that the first row is:

1+2+3+...+99+100=row_one

where row_one is the sum of row one.

If you know how to sum this you'll have no problem doing the rest of the array.

The second row is:

2+4+6+8+...+198+200=2(1+2+3+4+...+99+100)=

2*row_one

The third row is 3+6+9+...+297+300=3(1+2+3+4...+99+100)=

3*row_one

The sum of the array is then:

row_one +

2*row_one +

3*row_one +

.

.

.

k*row_one (the k-th row) +

.

.

.

100*row_one

Thus the sum of the array is

1*row_one+2*row_one+3*row_one+...100*row_one=

row_one(1+2+3+...+99+100)=row_one*row_one

or row_one^2

Now what is row_one?

Roger, Thank you! I did solve it like that, but it did not look right! I e-mailed my teacher to ask her but, she has not e-mailed me back yet. It is a homework problem for tomorrow. Thanks for letting me know I was right! I am not very good in math! LOL!

x<-2>3=

anybody cam help this problem.......this is my assignment to be pass tomorrow....

pls..pls...help me....

Andy, I'm not exactly sure what your question is. The statement doesn't make sense as it stands.

x<-2>3=

Can you clarify what you mean here?

Also, you should start a new thread.

Do you see the Post a New Question link above?

- Problem Solving Math Question -
**travis**, Thursday, February 17, 2011 at 6:47pmbill purchased 4 pens for $3.32 including $.16 sales tax.FIND THE cost of 1 pen.

Write an equation Then Solve

**Related Questions**

Discrete mathematics - I need help solving this problem, I have followed the ...

Math - 1.(A)(i)Show that 2+4+6+8+..+2n=n(n+1). (ii)Find the sum of the first 200...

math - What strategy did you use in solving this problem? 22. Suppose that you ...

Calculus - I'm having trouble with part of a question in a problem set. The ...

Maths - I will be thank full to u in solving the below problem. The sum of two ...

math word problem - can someone help me solve this? not just an answer but a ...

math - find 2 numbers to fit all these rules: to the nearest 10 and 100 ,both ...

algebra - andy has the cards 1,5,7, belle has the cards 5,4,7 carol has the ...

math URGENT!!!! - i have a list of 5 different numbers. the sum of 2 of the ...

Math - What is the sum of the first 200 odd numbers? A rectangle has an area of ...