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Posts tagged with numbers

Which Number Has Its Letters in Alphabetical Order?

August22

And, for Mathematical fun, which Number Has Its Letters in Alphabetical Order? [Answer in Post Support]

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Numbers Matter

June13

Novak Djokovic started to realize what he had just achieved. This was the moment he won grand slam number 23, surpassing Rafael Nadal at the top of the men’s all-time list. In a golden era for the sport – stretching back to Roger Federer’s first grand slam title 20 years ago – Djokovic has now eclipsed those […]

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And…Counting

May6

There’s a Winnie the Pooh song about counting. “Counting, counting, numbers are for counting…” the wise Owl sung to little Roo who was trying to help Pooh to count his honey pots for the party. Counting is an integral part of our lives today. We count our income and our expenses, we count calories and the […]

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Mind Boggling Numbers

March22

What’s the biggest number you can think of? When I was a child, it’s the kind of question we’d ask each other in the school playground. Someone would say something hopelessly naïve like “a billion billion billion”, only to be outstripped by a peer who knew about trillions, squillions or kajillions (it didn’t matter if […]

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The Importance of Numbers, Trump Style

December31

As reports come in for the Donald Trump tax returns, interesting numbers are raising questions which auditors may question. In each year of his presidency, for example, Trump claimed he received exactly $18,000 in interest on a loan he said he gave his daughter Ivanka Trump and $8,715 in interest from his son Donald Trump, […]

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What’s Your Favorite Number?

September14

In 2014, a survey launched by a British mathematics writer has found that seven is the world’s favorite number, reports The Guardian. The numbers three, eight and and four came in second, third and fourth. What makes this amusing is that I was about to do a post that told readers that 7 was my favorite […]

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Queen Elizabeth II: Her Reign in Numbers

September11
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Way Crazy Counting!

April14

Super fast counting to produce super large numbers—the art of the abacus!

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Trick using the Fibonnaci Series!

June4
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Numbers are Vital – Here’s the Proof

April2

I love the “cover-up method” where I hide something and students are challenged to find the answer. For example, suggest some numbers that would make this new item make sense. Then check out the solutions in ‘Post Support’.

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« Older Entries

Post Support

Largest number between o and 1 million which does not contain the ‘n’ is 88

 

Rotation SAT Problem: Answer: 4 (see: https://www.youtube.com/watch?v=FUHkTs-Ipfg)

 

Which number has its letters in alphabetical order? Answer: F O R T Y

Hidden Rabbit? Clue: check the trees

How long for the stadium to fill? 45 minutes.

Where are you? the North Pole

Prize Object Puzzle: If Sue does not know where the prize is in the first question, it can’t be under the square. She must have been told it is under another shape. Apply this same logic to Colin. It is then obvious that the prize cannot be under a yellow object. That helps Sue eliminate her yellow shapes. Got the idea?

Algebra Puzzle: Answer = 1

Popular Math Problems Answers: 1, 1

Number of tabs? According to Lifehacker, the ideal number of tabs you should have open is nine. Yes, a single digit. To some, this is like playing a piano and only using a fraction of the notes!

Worst Graph? Where to start. What a visual mess and even some of the lines merge and are impossible to follow. A graph is a visual display of data, with the goal to identify trends or patterns. This is a spider’s web of information which fails to show a clear pattern at all. Solution? Well, different colors would help, or why not group in two or three graphs where trends are similar?

Number of different nets to make a cube is eleven – see this link

Homework Puzzle; The total value of the counters is 486, so halve this to get 243. Now, arrange the counters to equal this amount twice.

The graph on the left (Coronavirus) is for a time period of 30 days, while the one on the right (SARS) is for 8 months! Very poor graphical comparison and hardly relevant, unless it is attempting to downplay the seriousness of the coronavirus?

10 x 9 x 8 + (7 + 6) x 5 x 4 x (3 + 2) x 1 = 2020

NCEA Level 2 Algebra Problem. Using the information given, the shaded area = 9, that is:
y(y-8) = 9 –> y.y – 8y – 9 =0
–> (y-9)(y+1) = 0, therefore y = 9 (can’t have a distance of – 1 for the other solution for y)
Using the top and bottom of the rectangle,
x = (y-8)(y+2) = (9-8)(9+2) = 11
but, the left side = (x-4) = 11-4 = 7, but rhs = y+? = 9+?, which is greater than the value of the opp. side??
[I think that the left had side was a mistake and should have read (x+4)?]

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