- #1

elainehula

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## Homework Statement

Sum all the whole numbers which are multiples of 5 from 5 to 1550

## Homework Equations

## The Attempt at a Solution

1550÷5=310

1550-5x310= 478950

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- Thread starter elainehula
- Start date

- #1

elainehula

- 1

- 0

Sum all the whole numbers which are multiples of 5 from 5 to 1550

1550÷5=310

1550-5x310= 478950

- #2

- 9,568

- 774

## Homework Statement

Sum all the whole numbers which are multiples of 5 from 5 to 1550

## Homework Equations

## The Attempt at a Solution

1550÷5=310

1550-5x310= 478950

Hint: Sum of arithmetic progression or, alternatively,$$

\sum_{k=1}^{310}5k = 5\sum_{k=1}^{310}k$$

- #3

HallsofIvy

Science Advisor

Homework Helper

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Yes, that is correct## Homework Statement

Sum all the whole numbers which are multiples of 5 from 5 to 1550

## Homework Equations

## The Attempt at a Solution

1550÷5=310

No, 1550- 5x 310= 0, That is what [tex]1550÷5= 310[/tex]1550-5x310= 478950

- #4

Bacle2

Science Advisor

- 1,089

- 10

Yes, that is correct

No, 1550- 5x 310= 0, That is what [tex]1550÷5= 310[/tex]means!

She is using the parentheses differently (incorrectly so , by priority of operations):

1550-5=1545 , 1545x310= 474950

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