Logitrick - Deutsche Edition (math puzzles - no knowledge of German needed)

REVIEWED BY: Ms. Cairo

MY RECOMMENDATION: Yes

AMAZON SUBSCRIPTION LINK: Logitrick - Deutsche Edition, by Matthias Berger

WEB ADDRESS: http://www.logitrick.com/en/ (English, to explain how it's played)
Start puzzling by looking at the first two rows. You are able to calculate the outcome, which is shown in a blue square, from the circled numbers. Using the same operations on the numbers in the third row leads to a solution.

BLOG DESCRIPTION: Stellen Sie ihr logisches Denkvermögen auf die Probe. Jeden Tag finden Sie bei Logitrick ein neues Rätsel. Auf der Suche nach einer Lösung helfen keine Tricks, nur pure Logik führt zum Ziel. [This is the German edition of Logitrick.]

MY REVIEW: This is the German edition of Logitrick, and truth to tell you aren't going to learn any Germany... the instructions are given for each puzzle - one posted every hour. No other German or other posts made! Still, it's the principle of the thing. If you like exercising your mind, and want to do it in a German way (; ) ) try this.

RECENT POSTS:

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Math Tricks Everyone Must Know (math, education)

REVIEWED BY: Ms Cairo

MY RECOMMENDATION: Maybe

AMAZON SUBSCRIPTION LINK: Math Tricks Everyone Must Know

WEB ADDRESS: http://mtemk.blogspot.com

BLOG DESCRIPTION: Product Description
This teaches you how to use your mind like a math genius easily.

Example:

Concatenate a 3-digit number with itself (e.g. 835 -> 835835). Divide it by 7.
The reminder will be zero!

Exampple: 235235 / 7 = 33605

Now, divid the quotient by 11. The reminder will be zero!

Example: 235235 / 7 = 33605 -> 33605 / 11 = 3055

Again, divid the recent quotient by 13. The reminder will be zero!

Exampple: 235235 / 7 = 33605 -> 33605 / 11 = 3055 -> 3055 / 13 = 235

Where 235 is the original number!

Another example:

Take 743!
Concatenate it with itself: 743743
Divide it by 7: 743743 / 7 = 106249
Divide the quotient by 11: 106249 / 11 = 9659
Divide the recent quotient by 13: 9659 / 13 = 743

Why?

7 * 11 * 13 = 1001
Multiplying 1001 by any 3-digit number will be as concatenating it with itself:

100 * 1001 = 100100

945 * 1001 = 945945

So, any number that is obtained by concatenating a 3-digit number with itself can be divided by 1001 and as 1001 is equal to 7 * 11 * 13, it can be divided by 7, 11, and 13.

MY REVIEW: Well, the blog hasn't been updated since April 15, and its a brand new blog, so I'm not sure if I can give it a thumbs up or not... (In addition, for some reason the author chose to use a masthead that says, "The Diary of Osama Bin Laden." What's up with that?

If the author does return to it, it looks like it could be a fun blog. Whether or not he returns to it, that's the question. I'll keep an eye on it...

RECENT POSTS:
--Multiplying by 5, 10, 15, 20, 25, 30, 35, ... [Par...
--Multiply 11*11 Up to 19*19 In Your Head
--Multiplying By 9, 99, 999, ...
--1001
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Ms. Cairo writes three blogs of her own:
Topical Murder and Dated Death
Winged Victory: Women in Aviation
Volcano Seven: Treasure and Treasure Hunters