Question

Take five more pairs of numbers and test the fact. Does sum of any pair changed after changing their order?

Answer 1

Taking five number pairs – 

(i) 17 + 9 = 26 or 9 + 17 = 26 ⇒ 26 = 26 

(ii) 12 + 1 = 13 or 1 + 12 = 13 ⇒ 13 = 13 

(iii) 4 + 25 = 29 or 25 + 4 = 29 ⇒ 29 = 29 

(iv) 7 + 3 = 10 or 3 + 7 = 10 ⇒ 10 = 10 

(v) 6 + 19 = 25 or 19 + 6 = 25 ⇒ 25 = 25

No, any pair does not change after changing their order.