Q8 of 55 Page 33

Find the value of:

(i) (20 + 3-1) × 32

(ii) (2-1 × 3-1) ÷ 2-3

(iii)

(i) (20 + 3-1) × 32

As we know that by the rule 20 = 1

So,

= 4 × 3(2-1) = 4 × 3 = 12 Ans. 
(ii) (2-1 × 3-1) ÷ 2-3

  

(iii)

= 22 + 32 + 42

= 4 + 9 + 16 = 29 Ans. 

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