Respuesta :

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1 + 1 + 1 + 1 = 4 → FOUR

2 + 2 + 2 + 2 = 8 → EIGHT

3 + 3 + 3 + 3 = 12 → TWELVE

4 + 4 + 4 + 4 = 16 → SIXTEEN

5 + 5 + 5 + 5 = 20 →TWENTY

Answer: 5 + 5 + 5 + 5 = Y
The answer is ' Y '

Since, 5+5+5+5=Twenty. where the last letter is Y.

Hope it helped!