If A + 1 = B, A + 2 = C, A + 3 = D then A + ? = Z

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Answer

    25

Explanation

We know the total alphabet of english are 26. A is the first alphabet and Z is the last alphabet i.e A is at number 1 and Z is at number 26.

Then 
    A + ? = Z
    1 + ? = 26
        ? = 26 - 1
        ? = 25

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Note

    Total alphabet of english are 26.

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