Saturday, December 23, 2017

Numbers : can you make 1 1 1 1 = 5? (Fr Brilliant.org)


Insert +, -, /, *, (), ^, !, or any operator you can think of...
Brilliant

Quiz of the Week


The picture or diagram that goes with your problem.

Do there exist operations that can be performed to make this equation true?

Note: Any operations can be used, so get creative!

Thursday, December 14, 2017

P5/P6 Area of triangle/ decagon (brilliet)



Sent from my iPhone

Begin forwarded message:

From: "Brilliant" <notifications@brilliant.org>
Date: 14 December 2017 at 2:40:06 PM SGT
To: <changchengliang@gmail.com>
Subject: Chang, orange you glad we send you math puzzles?

In the regular decagon above, find the percentage of area that is shaded orange.
Brilliant

Problems of the Week
December 11 - December 17

Basic Intermediate Advanced

The picture or diagram that goes with your problem.

In the regular decagon above, find the percentage of area that is shaded orange.

Hint: You can solve this in your head with one quick trick!


Image of the possible answers for this problem.


Solve
Brilliant Brilliant

Thursday, November 30, 2017

Monday, November 27, 2017

Monday, November 20, 2017

Logical thinking: “What will balance this scale?”


At the end of this Exploration, you'll have a thorough toolbox of algebraic techniques that feel natural to use and empower you to master complex problems and puzzles!
Brilliant

Quiz of the Week


The picture or diagram that goes with your problem.



How many green squares should be placed on the right side of the bottom scale in order to make it balance when released?






Solve


Solve beautiful puzzles with algebraic techniques


Get unlimited access to Algebra Through Puzzles and much more by becoming a Premium member.


Learn more  
Brilliant Brilliant

Tuesday, November 14, 2017

Mass, algebra , Logical thinking



Sent from my iPhone

Begin forwarded message:

From: "Brilliant" <notifications@brilliant.org>
Date: 13 November 2017 at 1:30:09 PM SGT
To: <changchengliang@gmail.com>
Subject: Chang, can you solve this scale puzzle?

How much does a single red square weigh?
Brilliant

Quiz of the Week


The picture or diagram that goes with your problem.

How much does a single red square weigh?


Image of the possible answers for this problem.



Solve


Solve beautiful puzzles with algebraic techniques


Get unlimited access to Algebra Through Puzzles and much more by becoming a Premium member.


Learn more  
Brilliant Brilliant