(5-1 × 3 -1)-1(a) (1/15) (b) (-1/15) (c) 15 (d) -15

1.	(5-1 × 3 -1)-1(a) (1/15) (b) (-1/15) (c) 15 (d) -15
Answer» (c) 15 We know that, = (5)^-1= (1 /5)¹… [∵ (a/b)^-n = (b/a)ⁿ] = (3)^-1 = (1/3)¹ … [∵ (a/b)^-n = (b/a)ⁿ] Now multiply, = {(1/5) × (1/3)}^-1 = {(1×1)/ (5×3)}^-1 = {1/15}^-1 = {15/1} = 15

Answer»

(c) 15

We know that,

= (5)^-1= (1 /5)¹… [∵ (a/b)^-n = (b/a)ⁿ]

= (3)^-1 = (1/3)¹ … [∵ (a/b)^-n = (b/a)ⁿ]

Now multiply,

= {(1/5) × (1/3)}^-1

= {(1×1)/ (5×3)}^-1

= {1/15}^-1

= {15/1}

= 15

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