Questions tagged [number]

questions about numbers

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-1
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68 views

Is mathematical truthfulness applied in Halachah an Oral tradition?

Many Biblical Halochos are built on some basic math techniques - addition, subtraction, division, multiplication, etc. This is predicated on our common sense, we speculate that mathematical logic ...
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2answers
73 views

The Tanakh books and the number 24 - what preceded what?

The Talmud evidently describes the existence of numerous extra-Biblical works (Apocrypha?). When the sages decided on the canon (Bava_Batra.14b?), was it decided on each book separately and the number ...
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10answers
1k views

Chamishit - mi yodeya?

Who knows a fifth? ?חמישית - מי יודע In the spirit of the song "Echad - mi yodeya", please post interesting and significant Jewish facts about the number 0.2. Lazy gematria may be worthy of ...
3
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6answers
96 views

Asirit - mi yodeya?

Who knows a tenth? ?עשירית - מי יודע In the spirit of the song "Echad - mi yodeya", please post interesting and significant Jewish facts about the number 0.1. Lazy gematria may be worthy of ...
0
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0answers
24 views

The Natural Numbers 1-9 and the part they may play in Ma'aseh Bereishis

I am fascinated with mathematics and the part that mathematics may play in Ma'aseh Bereishis . I strongly feel that Mathematics is part of Hashem's wisdom put to use in the creation of everything. ...
1
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1answer
177 views

Why are Hebrew cardinal numbers switched to the other gender after the first two?

When counting in Hebrew, the first two cardinal numbers are in the correct gender, but all subsequent numbers seem to be in the opposite gender? For example: Feminine Numbers are: אַחַתֹ-שְתַּיִםֹ-...
2
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14answers
239 views

Revi'a - mi yodeya?

Who knows a quarter? ?רביע - מי יודע In the spirit of the song "Echad - mi yodeya", please post interesting and significant Jewish facts about the number 0.25. Lazy gematria may be worthy of ...
3
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12answers
1k views

Shlish - mi yodeya?

Who knows a third? ?שליש - מי יודע In the spirit of the song "Echad - mi yodeya", please post interesting and significant Jewish facts about the number ⅓. Lazy gematria may be worthy of ...
8
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15answers
1k views

Chatzi - mi yodeya?

Who knows a half? ?חצי - מי יודע In the spirit of the song "Echad - mi yodeya", please post interesting and significant Jewish facts about the number 0.5. Lazy gematria may be worthy of ...
7
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1answer
158 views

Why are there different versions of what Chazon Ish says is the size of an Amah?

Different sources have different information regarding the size of an Amah (all measurements are attributed to Chazon Ish): Halachipedia - 24 in. / 60.96 cm Dafyomi.co.il - 22.72 in. / 57.72 cm Daat....
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1answer
82 views

Word count methods

I asked a question about the orthography of two words in the last chapter of the Shema, and I started to wonder, whether the presence of a maqaf mattered with respect to word count. And if you ...
4
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1answer
328 views

Why were Mabul rains for 40 days?

What is the reason that G-d brought rain during 40 days in the mabul; could G-d not do it a second?! Of course He could. So what's the explanation for this duration of 40 days?
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0answers
69 views

Hashem's Ontology and the Sefirot

My question is, Hashem ontologically speaking, His Being, is a singular, yichud in all respects. So does this conception stop at Ein Sof, or even before Ein Sof? And once the ohr proceeds forth from ...
1
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0answers
25 views

Forty and five, not five and forty

In Bereishis 18:28, when Hashem says that He will not destroy Sedom if there are 45 righteous people there, the number is spelled out "forty and five." However, most times a number between twenty and ...
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2answers
37 views

How to calculate the Hebrew character representing the verse number? [closed]

Here they have Hebrew letters on the sides marking each verse. It starts at the beginning of the alphabet and seems to work its way up. I can't find any information on it though. Searching around ...
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0answers
33 views

Holy days on the weekend [duplicate]

There are 13 holy days per year on which we must not work (outside of Israel): 2 Rosh Hashanah, 1 Yom Kippur, 4 Sukkot, 4 Pessah, 2 Shavuot. What are the minimum and maximum numbers of these days that ...
1
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1answer
105 views

How many times is the Amidah said in a year?

The Amidah is said three times a day during weekdays, four on Shabbat, and I believe a fifth time during Yom Kippur. Plus there are the repetitions of the Amidah that are said by the Chazen. For ...
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0answers
40 views

How many Cohanim and Levi'im worked in the Temple daily?

How many Cohanim and Levi'im worked in the Temple daily (excluding supporting professions, like preparing woods or oils) and how many of them stayed there for sleep?
4
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0answers
70 views

What is 1,530 a reference to?

In his commentary to Genesis 7:12, R. Isaiah of Trani (the Elder) writes: וכן במניין ישראל אלף וחמש מאות ושלשים ואי אפשר דבר זה שלא היה אחד מהם יתר או חסר אלא כן דרך המקראות לתפוש מניין שלם ואפי' חסר ...
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3answers
198 views

Has the number of the tribes of Israel anything to do with the universe/stars/planets?

Has the number of the tribes of Israel anything to do with the universe/stars/planets? Maybe the other way around? Is there anywhere in the Talmud or tradition that talks about this question (not ...
3
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1answer
51 views

Why does the Mishnah record the significance of the fifteen steps but not the twelve steps?

Middos 2:3 relates that there were twelve steps in the Cheil: וּשְׁתֵּים עֶשְׂרֵה מַעֲלוֹת הָיוּ שָׁם There were twelve steps there. Later, in Mishnah 5, the Mishnah relates that there are ...
2
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2answers
211 views

Population of Jews at exodus seems unrealistically large [duplicate]

I am a preacher. Today I was talking with some Jews who talked about the 2.5 -3.0 million people who witnessed the miracles of the exodus. But according to my knowledge, the population of Africa at ...
5
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1answer
108 views

Why do washing cups have two handles?

My question is closely related to this one. However, that question has an unsourced assumption. So, I'm asking my question, here, hoping that I can get a clearer answer. Most washing cups (for ...
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2answers
259 views

How many Mitzvos does the Mishnah cover?

How many (out of the 613 Deoraytah) Mitzvos are explicitly discussed in the 6 Sdarim of the Mishah (not including those that are only mentioned tangentially, like Kibud Av at the beginning of Peah)?
2
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1answer
510 views

Is there math in Torah?

I have watched a nice movie back in the day that deals with numbers. In one of the scenes. A Jewish man comes to The Mathematician and tells about how the Hebrew uses the same "letters" as letters ...
1
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1answer
161 views

The number 8 does not appear in the numbering of the tribes in Bamidbar except for the census of Kehos and the total of Leviim. Why not?

Is there any significance in the absence of the number 8 in the individual census of the 12 tribes taken in Chapter 1 of Bamidbar? Reuben: 46,500 Simeon: 59,300 Gad: 45,650 Judah: 74,600 ...
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0answers
58 views

When did the custom of giving charity in multiples of 18 begin? [duplicate]

People often give charity in multiples of 18. What is the earliest record of such donations?
0
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2answers
132 views

Bamidbar Census does not add up

Why does the census of Bamidbar 1.20-43 come to a sum of 603,550 when the total tribal count is 637,800? There is a difference between the total tribal count (637,800) and the pasuk (verse) in 1:46 ...
4
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2answers
125 views

Why do we count Sefirah cardinally rather than ordinally?

The Shulchan Aruch (OC 489:1) rules as follows: כיצד ביום הראשון אומר היום יום אחד (בעומר) עד שמגיע לשבעה ימים ואז יאמר היום שבעה ימים שהם שבוע אחד (בעומר) וביום שמיני אומר היום שמונה ימים שהם שבוע ...
3
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3answers
89 views

Why Eleven and Twelve in “Echad Mi Yodea” refer to the same thing?

In Echad Mi Yodea song both #11 and #12 refer to the tribes - without Yosef and with him. This is especially pronounced in the families that go through the full list on every line, like "the 3 ...
8
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1answer
123 views

Why is the beracha of Shehechiyanu phrased in the plural?

The Bracha of Shehechiyanu reads as follows: ברוך...שהחיינו וקיימנו והגיענו לזמן הזה ...that He kept us alive and sustained us and brought us to this time. Why is Shehechiyanu phrased in the ...
2
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0answers
95 views

Tools to validate Torah codes

Torah codes are "a purported set of secret messages encoded within the Hebrew text of the Torah" (Wikipedia). For instance, a well known code suggests that counting 3 intervals of 12111 letters from ...
4
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3answers
207 views

603,550 Jews at Sinai and 603,550 Jews Entering Promised Land?

Why in Exodus 38:26 does it say there were 603,550 men over age 20, and then in Numbers 1:46 the exact same number (603,550) is again listed? Didn’t all the Jews of the generation in Exodus all die ...
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0answers
20 views

Can Jews be counted if each person says his / her number?

This answer indicates that it is always forbidden to count Jews directly. However, can one count them if each person says his / her number? E.g. - when I was in camp, the counselor assigned us a ...
2
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1answer
50 views

When is it halachically prohibited to count Jews?

Half Shekalim were used to take a census of Jews in the desert. When counting Jews to form a minyan, people use a verse or some other method to count rather than using direct numbers. Under what ...
3
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5answers
348 views

Numbers of Exaggeration in Talmud

I remember seeing an early authoritative source (Rishonim, maybe a Tosfos?) that noted which numbers are always (technically not always) used by the Rabbis to indicate exaggeration in stories (60, 300,...
3
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1answer
123 views

Chapters of Tanach present in Talmud Yerushalmi

Chapters of Tanach present in Talmud Bavli asks: I heard there is a style of Talmud study somewhere, where as a verse presents itself in the Talmud, the student would learn the entire chapter from תנ״...
0
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1answer
309 views

Total number of Simanim In Shulchan Aruch

How many Simanim (Not Seifim) are there in all of Shulchan Aruch?
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1answer
41 views

Controversies in counting the 24 organs of freeing the slave

I've already asked a couple of questions on the counting of the 248 body organs, see the list. Lately, I asked some question on slavery and here's where those topics cross. The Gemmorah in Kiddushin ...
3
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2answers
182 views

How are there 72 verses in Parshat Yitro?

In many chumashim a masoretic note appears at the end of Parshat Yitro which states that there are 72 verses in the sidrah. (See e.g. here) How is this number arrived at? By my count, if one uses ta'...
0
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1answer
92 views

Why 1/6th - שתות in the Mishna is in Aramaic?

It appears suspicious to me, that an Aramaic word Shtut is used everywhere in the Hebrew text of the Mishnah, like in: "שׁוּם הַדַּיָּנִין שֶׁפִּחֲתוּ שְׁתוּת אוֹ הוֹסִיפוּ שְׁתוּת..." (...
6
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0answers
78 views

Is there a connection between the two times 7 cows, ears and years that Yaakov worked for his wives?

Is there any connection or relationship between the seven fat & seven lean cows, the seven beautiful and seven parched ears of grain that Pharaoh dreamt and Yosef interpreted, and the seven years ...
6
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1answer
85 views

Ascending or descending order when mentioning units in a number?

I noticed an apparent conflict when the Torah uses units of a large number. It seems to occur with mentioning someone's age. Examples: Breishit 23:1 Sarah lived 100 years and 20 years and 7 years ...
6
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1answer
144 views

Calling up more people to the Torah to ensure seven Shabbat observers

R Avraham Yosef (the son of R Ovadia Yosef) recently said on his weekly radio program that, in his synagogue, he always call up 10 people on Shabbat to ensure that at least seven of them are Shabbat-...
1
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1answer
257 views

Different counts of the 248 organs - bones or soft tissues?

First read the related questions here (mitzvot-and-their-body-parts and here (613-organs). The Mishnah in Ohalot (1:8) states that there are 248 organs and lists all of them: "מָאתַיִם ...
1
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1answer
74 views

What is the minimum number to comprise a band (גדוד)?

At the end of parsha 20 in Pesikta Rabbati, it refers to various bands (גדוד) of angels being shown to Moshe. Is there any minimum number as defined in Torah as to how many comprise a band?
8
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1answer
88 views

Inconsistent base-10 system of judges

In Devarim 1:15 (also Shemot 18:21) we see the numerical system of the hierarchical system of leaders: ואקח את־ראשי שבטיכם אנשים חכמים וידעים ואתן אתם ראשים עליכם שרי אלפים ושרי מאות ושרי חמשים ...
6
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2answers
112 views

The purpose of the detailed counting of Benei Yisrael in the Torah

We know that all letter in the Torah has a purpose. A lot of laws are learned from a little thing in the Torah, etc. What is the purpose of all the details in the counting of Benei Yisrael in ...
7
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2answers
276 views

Chapters of Tanach present in Talmud Bavli

I heard there is a style of Talmud study somewhere, where as a verse presents itself in the Talmud, the student would learn the entire chapter from תנ״ך. With that, were one to complete the entire ...
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1answer
93 views

Shisha Va-shishim Ushlosh Meyot (366) - mi yodeya?

Who knows three hundred sixty six? ששה וששים ושלש מאות - מי יודע?‏ The traditional Passover song "Echad - mi yodeya" implies a possible presupposition that there is a Jewish significance to be found ...

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