Gujarat BoardEnglish MediumSTD 7MATHSExponents1 Mark
MCQ
If $2^n=4096$, then $2^{n-5}=$
✓
$128$
B
$64$
C
$256$
D
$32$
✓
Answer
Correct option: A.
$128$
Since,
$\text { As, } 2^n=4096$
$\Rightarrow 2^n=2^{12}$
Comparing the exponent of both the sides, we get:
$\mathrm{n}=12$
Now, $2^{n-5}=2^{12-5}$
$=2^7$
$=128$
Hence, the correct alternative is option $(a)$.
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