Question

Complete the magic square: The sum is 42. Use numbers from 10 – 18.

Answer 1

Answer:

Considering that each row, column and diagonal add up to 42, All you'll have to do is add the other numbers and subtract it from 42 step-wise.

In the given below attachment, I have marked the empty boxes with numbers so that I can connect them with the answer here:

1 = 13  

2 = 14

3 = 16

4 = 10

Hope this helps.

Answer 2

Answer:

17+10+15=42

12+14+16=42

13+18+11=42