# Math problem?

What is the sum of all the digits in the sequence. 1,2,3,4,5,.............,99,100

### 3 Answers

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- cryptogramcornerLv 61 decade agoBest Answer
Here's how you do this..

pair up the numbers

1 + 99 = 100

2 + 98 = 100

3 + 97 = 100

down to

49 + 51 = 100

This accounts for 4900

At this point you still have the 50 and 100 so add that

to get 5050

- Anonymous1 decade ago
cool

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