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

Insert +, -, /, *, (), ^, !, or any operator you can think of... Quiz of the Week Do there exist operations that can be performed to make this equation true? Note: Any operations can be used, so get creative!

P6 percentage (fr SherylTan)

P5/P6 Area of triangle/ decagon (brilliet)

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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. Problems of the Week December 11 - December 17 Basic Intermediate Advanced 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! Solve Brilliant, 15 Butte Pl, San Francisco CA 94103 Unsubscribe from receiving Brilliant problems of the week 2-3 times per week (like this one).

P5 P6 average (fr Sheryl)

P6 circles, area (fr Sheryl)

conditional (fr Sheryl)

Numbers : crack the code

Sec3 trigo (fr Keith )

P5 rate, moneys (PCS SA2)

P5 whole numbers, conditional (PCS SA2)

P5 Average (PCS SA2)

P5 rate, money, (PCS SA2)

P5 money, model, repeated change (PCS SA2)

P5 Ratio (PCS SA2)

there's a quick trick to this geometry puzzle...

What percentage of the square's area is colored blue? Problems of the Week November 27 - December 3 Basic Intermediate Advanced What percentage of the square's area is colored blue?

Music and mathematics - Wikipedia

https://en.wikipedia.org/wiki/Music_and_mathematics


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Fwd: Can you do this in your head?

What is 6! x 7! / 10! ? Quiz of the Week

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! Quiz of the Week 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, 15 Butte Pl, San Francisco CA 94103 Unsubscribe from receiving Brilliant problems of the week 2-3 times per week (like this one).

P6 circles (harder) (Fr MYD)