Question

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Answer 1

2^4a=16^-1
by hit and trial

a= -1

10b= 1/100

b= 1/1000

now putting the value:

(100×-1)^-1.(10×1/1000)^-1

(-100)^-1 . (1/100)^-1

-1/100 . 100
= -1