যদি \(\frac{(2^{a+b})^2\times (2^{b+c})^2\times (2^{c+a})^2}{(2^a2^b2^c)^3}=4 \) হয়, তাহলে a + b + c এর মান হবে:

1
0
2
2
3
-2
4
1

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