Bella is planning to write in a journal. Some pages will have 1 entry while others will have 2 entries. If she is writing 10 entries, how many different ways can she write them in her journal?

Question

Third grade homework is hard!! :)

Answer 1

We know that the number of 2-page entries added to the number of 1-page entries must come to 10.

So we can make a table of all the ways to do this:

Number of 2-page entries	Number of 1-page entries
0	10
1 (2 pages)	8
2 (4 pages)	6
3 (6 pages)	4
4 (8 pages)	2
5 (10 pages)	0

From the table we can see that there are 6 ways to do this because there are 6 rows in the table. In each row the total of pages comes to 10.