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Who knows twenty?

Please cite/link your sources, if possible. After about one business day, I will:

  • Upvote all interesting answers.

  • Accept the best answer.

  • Go on to the next number.

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9 Answers 9

up vote 7 down vote accepted

20 are the gerahs in a shekel (Ex. 30:13).

Also, 20 silver denarii = the 5 shekalim needed for redeeming a firstborn son (Bava Metzia 44b and Rashi there).

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Twenty is (the age) when one can be put to death! (by the hands of heaven as a punishment for a commandment that incurrs such a penalty.)

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20 is the age when one can sell inherited real estate. (Hoshen Mishpat 235:9)

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Source please? (Is that in yesh nochalin?) –  Shalom Apr 20 '10 at 19:02
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Mi Shemeis, actually (Bava Basra 156a). –  Alex Apr 20 '10 at 19:28
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Twenty is the age of the Draft. (Numbers 1:3)

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"... age of the [Torah] Draft" would still fit the meter. –  Yahu Apr 20 '10 at 18:15
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20 represents כתר, the highest of the Sefiros, since (a) the initial letter of כתר is כ, which equals 20, and (b) the numerical value of the word עשרים is 620, which equals that of כתר. (Likkutei Torah, Shir Hashirim 35c)

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Twenty (point one) minutes are a "hiluch mil" (a Halachic time unit) according to Rabbi Ari Storch's reading of Tosfos.

(The common opinions are 18, 22.5 or 24 minutes instead.)

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20 are the 10 commandments (two sets of luchot, and also twice listed in the Torah)

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20 are the years which Hashem waits for someone to get married before deciding that his bones should rot (Kiddushin 29b).

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One should not be a chazan for mussaf before twenty. torah tmimah and others since davenning resembles korbonus and people under twenty were not included and didnt have to pay the machzis hashekel for them.

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