Of all my siblings, which I have many,
I am the number, wise old twenty.
I always wear, my long thin hat,
And stand on one leg, I've never sat.
I'm last of last, and last of first
I'm last of the best, and last of the worst.
Who am I?
(答案為一個英語字母)
該題為巔峰推理題,您沒有瀏覽該題目許可權,只有有效OTF會員才能參加巔峰推理。