Question

Can someone help me answer these

Answer 1

1. 05+02=07

07+03=10

2. 05+04=09

09+01=10

3. 05+01=06

06+04=10

4. 05+03=08

08+02=10

5. 17+03=20

6. 19+01=20

Explanation:

(Answers are in bold)