If (x+x+x) = x*x*x and x <>0 (x is not zero) then what’s the value of x? I like this one a lot because x=0 would be an obvious answer and it’s taken away, and then when you plot it, you get 2 correct answers. Let’s see how it’s done… (x+x+x) = x*x*x so, 3x=x^3 […]
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Welcoming 2019 (Seattle)
Howdy, today (first day of 2019) I want to share with you these video clips from the Space Needle light and fireworks show on new year’s eve of 2018. Video’d from my living room and uploaded to YouTube…funny how within seconds, some company claimed copyright on these in my living room 😀 Capitalism at best! […]
Different approach to NYE in Seattle
…in 25 years! So we were told. The lighting will be different, the Space Needle will appear to be “dancing” with the lights. Naturally, being in Seattle for over 2 decades, and having seen all the contraptions of the past, I was curious to check it out. Weather was perfect, 35 F, no rain, no […]
Statistics can mess up your mind!
Hi again! If you like brain teasers, you’ll love this. You don’t need to be an expert in statistics and probabilities, just curious to appreciate it. Read on. What is the chance the next person you meet (in a city or country) has number of arms (or hands) that is ABOVE average? For more fun […]
Brain Teaser: Marbles
How many marbles and bags are used in the following scenario? For more brain teasers and puzzles, click here.
Brain teaser variation: Segment size
Determine the specific group size given the following situation. In a group of 50 kids, 30 are taking basketball and 15 are taking tennis lessons. Of the kids taking basketball or tennis, 12 are taking both lessons. How many are not taking either lesson? For more brain teasers and puzzles, click here.
Brain teaser: Class size
Determine the total class size given the following situation. For more brain teasers and puzzles, click here.
Math quiz (for kids)
Math quiz: Chance of a promo and raise
What’s your chance of a promotion AND a raise in the next 2 months given the following scenario?
Easy math quiz