Search All of the Math Forum:
Views expressed in these public forums are not endorsed by
Drexel University or The Math Forum.
|
|
|
|
POW Solution, Jan. 17-21
Posted:
Jan 24, 1994 11:13 AM
|
|
*************************************** Problem of the Week, January 17-21
Fold a block of eight postage stamps, as indicated below, along the perforations and without tearing, so as to form a single pile with the stamps numbered consecutively from top to bottom.
------------------------------- | | | | | | 1 | 8 | 2 | 7 | | | | | | | | | | | ------------------------------- | | | | | | 4 | 5 | 3 | 6 | | | | | | | | | | | -------------------------------
***************************************
This week's problem was more of a puzzle than a problem, with a surprising yet simple solution (simple once you knew the answer!). We received correct solutions from
Ashley Todd & Ila Kavanah Grade 8, Burnaby South Secondary Sch., BC, Canada Catriona Cheng & Bonita Suen " Nghiem Vu Grade 10, Fairfield HS, Fairfield, CT
***************************************
From: PDALEY@fair1.fairfield.edu
Step 1: Number on both sides of the paper. Step 2: Fold in half the long way so that you can see the stamps according to the figure below. ------------------------------- | | | | | | 1 | 8 | 2 | 7 | | | | | | | | | | | -------------------------------
Step 3: Form a loop by moving the end with the 7 around the back and insert in the pocket on the left behind the 1 and in front of the 4. Step 4: Slide the stamps in until the 7 is on top of the 8.
Nghiem Vu, grade 10 Fairfield HS Fairfield, CT
***************************************
From: "Jim Swift" <jswift@cln.etc.bc.ca>
The following solution was obtained by Ashley Todd and Ila Kavanah, Grade 8 Students at Burnaby South Secondary School, BC, Canada
Fold the 1 8 2 7 down. Tuck a corner of the 6 between the 5 and 8, then tuck the 2 between the 4 and 1. * ------------------------------------------------------------------ * | Jim Swift, School Phone (604) 664-8560 X1201 | | Burnaby South 2000 Sec School, | | Burnaby, BC Canada Home Phone (604) 936-0395 | * ------------------------------------------------------------------ *
***************************************
From: "Jim Swift" <jswift@cln.etc.bc.ca>
Fold the stamps along the line between 1 8 2 7 and 4 5 3 6. Push the 7 and 6 pair between the 1 and 4 pair. Now push the 7 and 6 pair further in between the 8 and 5 pair tucking the 4 between the 3 and the 5.
Jim Swift * ------------------------------------------------------------------ * | Jim Swift, School Phone (604) 664-8560 X1201 | | Burnaby South 2000 Sec School, | | Burnaby, BC Canada Home Phone (604) 936-0395 | * ------------------------------------------------------------------ *
|
|
|
|