. (a) Write down two pairs of integers whose

(i) Sum is ?4
(ii) Difference is ?2
(iii) Sum is ?5
(iv) Sum is 0

Solution :

Assuming the sign of ? as "-" in first three parts.

Here is the answer.

(i). -2 and -2; -6 and 2

(-2) + (-2) = -4

-6 + 2 = -4



(ii). 2 and 4; 6 and 8

2 - 4 = -2

6 - 8 = -2

(iii) -3 and -2 ; -6 and 1

(-3) + (-2) = -5

-6 + 1 = -5

(iv). -3 and 3; -2 and 2

-3 + 3 = 0

-2 + 2 = 0

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