Commentsruoxi.wang (25)in mathematics • 6 years agoRE: Brainsteem Mathematics Challenges: Factorial SumHi, @rycharde, thank you for the problem and response. I should have triple checked before answering, especially when it was done by tapping solution on a phone and right before bed :p The path…ruoxi.wang (25)in mathematics • 6 years agoRE: Brainsteem Mathematics Challenges: Factorial SumInteresting problem, here is my solution: Firstly, 2^n is an even number, therefore a!, b! and c! must be either: 3 even numbers, or: 1 even and 2 odd numbers. Factorials are all even except…ruoxi.wang (25)in busy • 6 years agoRE: Another Brain TeaserLol, nice teaser, totally missed that part. Thanks for the problem and pointing out my mistake straight away.ruoxi.wang (25)in busy • 6 years agoRE: Another Brain Teaser10, it is basically half of the second equation.ruoxi.wang (25)in maths • 6 years agoRE: Mathematics13394567ruoxi.wang (25)in puzzle • 6 years agoRE: Puzzle -How many Squares?Lol, the 50th and 51th are indeed well hidden. Thanks for the puzzle and the answer. I really enjoyed it ^.^ruoxi.wang (25)in puzzle • 7 years agoRE: Puzzle -How many Squares?I could only find 49 too... any hint on finding the other two?ruoxi.wang (25)in riddle • 7 years agoRE: Everyone is getting this riddle wrong. Can you work it out?Nice problem, it reminded me again to double check everything before jumping to the conclusion ^_^ruoxi.wang (25)in teaser • 7 years agoRE: Quick Teaser!Seems like 40 to me?ruoxi.wang (25)in steemstem • 7 years agoRE: What you need to know to study Linear Algebra - #1 Vectors (with animations and pictures)Nice introductory article except that 4,99 is a bit weird to represent a decimal :P
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RE: Brainsteem Mathematics Challenges: Factorial Sum
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RE: Another Brain Teaser
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RE: Mathematics
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RE: Puzzle -How many Squares?
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RE: Everyone is getting this riddle wrong. Can you work it out?
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RE: What you need to know to study Linear Algebra - #1 Vectors (with animations and pictures)
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