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)