Which of the arguments is not valid in proving sum of two odd number is not odd.

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Q.) Which of the arguments is not valid in proving sum of two odd number is not odd.

(A) 3 + 3 = 6, hence true for all

(B) 2n +1 + 2m +1 = 2(n+m+1) hence true for all

(C) all of the mentioned

(D) none of the mentioned

Correct answer : Option (A) - 3 + 3 = 6, hence true for all

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