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Answer :

The answers are:

2
4
6
8
10
12
14

Answer:

2

4

6

10

12

14

16

18

20

Step-by-step explanation:

1 + 1 = 2

2 + 2 = 4

3 + 3 = 6

4 + 4 = 9

5 + 5 = 10

6 + 6 = 12

7 + 7 = 14

8 + 8 = 16

9 + 9 = 18

10 + 10 = 20