Q.3 (i) For any integer a, what is (-1) × a equal to?

(ii) Determine the integer whose product with (-1) is 0.

(a) -22

(b) 37

(c) 0

(ii) Determine the integer whose product with (-1) is 0.

(a) -22

(b) 37

(c) 0

(i) (-1) × a = -a

(ii) (a) (-1) ×( -22) = (-) × (-) × 1× 22= 22

(b) (-1)× 37= -37

(c) (-1) × 0 = 0 [\(\therefore \)a × 0 = 0]

Hence (c) 0 is the required integer.