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নিচের চিত্রে

f : A \to B

g : B \to C

হলে কোন উত্তরটি সঠিক?

(gof)(1)≠ (gof)(3)

(gof)(1)=(gof)(3)

(gof)(2)≠(gof)(3)

(gof)(2)=(gof)(3)

ANS : 2

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