By the Numbers #39

Read the hint and select the number it describes — easy as 1-2-3!

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arjaygee
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Last updated: July 9, 2024
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First submittedJune 5, 2024
Times taken43
Average score55.0%
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Number of national capitals (of any type) with an English language name that starts with “I”
Islamabad, Pakistan
Riverside Drive address of Doc Brown in Back to the Future
Number of days in October
Number of sides a heptadecagon has
DXX - X
These are Roman numerals.

DXX is equivalent to 520 in Arabic numerals.

X is equivalent to 10 in Arabic numerals.

520 - 10 = 510

Two gross minus a dozen
1 gross = 144
1 dozen = 12

(144 * 2) - 12

288 - 12

276
In the KJV, the number of the commandment “Thou shalt not commit adultery”
270105 - 1
(270 + 105) - 1

(270 + 2) - 1

272 - 1

271
Number of insular areas administered by the U.S. that have no permanent civilian settlements, i.e., those that are uninhabited or whose settlements consist solely of military personnel, government employees, and/or government contractors
Pacific Ocean: Baker Island, Howland Island, Jarvis Island, Johnston Atoll, Kingman Reef, Midway Atoll, Palmyra Atoll, Wake Island

Caribbean Sea: Navassa Island
Number of wheels in the name of a type of U.S. big rig (UK: articulated lorry; Canada: transport truck)
Number of the amendment to the U.S. Constitution that addresses vacancies in the offices of President and Vice President
Number of faces of January in the title of the 2014 film starring Viggo Mortensen and Kirsten Dunst
Amini, Hossein (dir.). The Two Faces of January. (2014). Studio Canal; Working Title Films. Starring Viggo Mortensen and Kirsten Dunst.
Number of U.S. insular territories that are populated and have capitals
American Samoa, Guam, Northern Mariana Islands, Puerto Rico, U.S. Virgin Islands
Number of sovereign states with an English language name that starts with “J”
Jamaica, Japan, Jordan
102 + 102
102 = 10 * 10 = 100

100 + 100 = 200
Number of ancient elements, before aether was added
Earth, air, fire, water
August date of the feast of the Assumption of Mary in the Roman Catholic liturgical calendar
10th Street NW address of Ford’s Theatre in Washington, D.C.
Number of U.S. states whose name begins with “X”
Number of nickels equivalent to US$ 100
A nickel is equivalent to 5 cents.

100 cents are equivalent to a dollar.

So, there are 20 nickels in a dollar (5 cents * 20 = 100 cents = 1 dollar)

(100 * 20 nickels) = 2000 nickels
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200
271
276
510
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Which countries are home to a "supertall" skyscraper, defined as being at least 300 meters in height?
Beat the clock by answering these fifty randomly-generated multiplication problems.
Fill in the blank with either million, billion, or trillion.
Every answer is a combination of a letter and a number. For example, W2 or G6. Can you guess them?
2 Comments
+1
Level 72
Jun 24, 2024
270^10/5 - 1 is completely wrong lol idek how you got to that answer

And if you're trying to write 270 (and 10/5) - 1 then this is very unclear

+1
Level 76
Jun 24, 2024
You are mistaken. The correct answer is given. The proof is shown in the post-game explanation.

The way I have expressed the mixed number is a common way to do so. The only other way I know of to express a mixed number is to type a space between the whole number and the fraction. I chose not to type the space. Your expression with the circumflex looks like an exponent to me, not a fraction. Ten fifths is written as a fraction, not as a fractional exponent. If you can document a reasonable alternative way to express a mixed number, I will consider making a change.

And yes, a mixed number CAN have an improper fraction, although students learning fractions are cautioned against using improper fractions in mixed numbers.