MCQ
$2^{74} - 2^{73} - 2^{72}$ is same as:
- ✓$2^{72}$
- B$2^{71}$
- C$2^{70}$
- DNone of these
✓
Answer
Correct option: A.
$2^{72}$
$2^{74} - 2^{73} - 2^{72}$
$= 2^{72} (2^2 - 2 - 1)$
$= 2^{72} × 1 = 2^{72}$
$= 2^{72} (2^2 - 2 - 1)$
$= 2^{72} × 1 = 2^{72}$
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