(i) (4-1 × 3-1)2 ( a-n = 1/an)
= (1/4 × 1/3)2
= (1/12)2
= (1×1 / 12×12)
= 1/144
(ii) (5-1 ÷ 6-1)3
= ((1/5) / (1/6))3 (a-n = 1/an)
= ((1/5) × 6)3 (1/a ÷ 1/b = 1/a × b/1)
= (6/5)3
= (6×6×6) / (5×5×5)
= 216/125
(iii) (2-1 + 3-1)-1
(1/2 + 1/3)-1 (a-n = 1/an)
LCM of 2 and 3 is 6
= ((1×3 + 1×2)/6)-1
= (5/6)-1
= 6/5
