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Spare parts has comics and random math topics for discussion. Includes questions (and answers), puzzles, and links to other sources.
5/26/14
Finding the Shaded AREA
(Learn more about area in the geometry section)
5/5/14
Tile Question
A wall is 8 feet high and 16 feet long.
We want to tile this wall with 4 inch by 4 inch square tiles.
How many tiles do we need to cover this rectangular wall?
4/9/14
Seating Arrangement
Our 10-person math club is meeting for dinner at a restaurant. (Unfortunately, the club has 2 members that I do not like.). The restaurant has round tables that seat exactly 10 people.
If I show up last, what is the probability that the remaining seat is next to someone I don't like?
(Learn more about combinations/permutations)
3/11/14
One Minute Math Question
What is the perimeter of the triangle?
Learn more about the Pythagorean Theorem...
2/18/14
Olympic Rings and Minor Arcs
How many minor arcs are in the rings?
Here is how many we found!
Learn more about arcs and circles...
1/22/14
Rubik's Cube
Math & Rubik's Cube Videos from numberphile.com
1/13/14
Factorial Questions!!
1) For integers > 1, what is (n - 1)! / (n - 2)! ?
2) For integers > 1, what is (n + 1)! / (n - 1)! ?
3) What is 6! 5! / 4! 3! ?
4) What are the last three digits of 20! ?
12/16/13
One Minute Math Question
How many 1 cubic inch blocks could fit inside a 1 cubic yard container?
11/26/13
One Minute Math Question
Click here for answer to repeating decimal subtraction question
11/18/13
"Counting 7's"
1) If you listed all the whole numbers between 1 and 1000, how many 7's would appear in the list?
2) How many integers between 1 and 1000 contain at least one 7?
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Math Comic #124 - "Chasing Olympic Dreams" (2-7-14)
Webcomic #121 - Rubik's Cube
"Thinking outside the box"
Math Comic #120 - "Factorials!" (1-8-14)
It's more than an exclamation point!
Webcomic #112 - "Snow White and the 7 Dwarf" (11-15-13)
A Grim(m) Fairy Tale!