Question

which option is correct​

Answer 1

Answer:

b) 16.

Step-by-step explanation:

*in the question in place of 4a it will be $4^a$ otherwise no option would be correct. *

ATQ,

Method 1 :

=> $4^a = 256$

We need to find value of $4^{a-2}$

So,

=> $4^{a-2} = \frac {4^a}{4^2}$

=> $4^{a-2} = \frac {256}{16}$

=> $4^{a-2} = 16$

Method 2 :

=> $4^a = 256$

=> $4^a = 4^4$

on comparing the powers,

=> a = 4.

We need to find value of $4^{a-2}$

So,

=> $4^{a-2} = 4^{4-2}$

=> $4^{a-2} = 4^2$

=> $4^{a-2} = 16$

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Answer 2

Answer:

gr8 ansr......above....go with tht only