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Fixing 6-20 to 6-23
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mrmmarsh committed Jan 13, 2023
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11 changes: 5 additions & 6 deletions pages/6-20-pi.md
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Expand Up @@ -60,7 +60,7 @@ __1.3__ Which of these numbers, when rounded to 1 decimal place, would give 3.2?
::: problem id=1_4 marks=2
__1.4__ It may not be possible to construct a square with the same area as a circle, but can you find a square with the same area as this triangle?

What would it’s edge length be?
What would its edge length be?

![](/resources/6-20-pi/1_4-right-angle.png){image align="center"}

Expand All @@ -69,7 +69,6 @@ What would it’s edge length be?


## 2. Triangle tangle puzzle
<!--- 2015 () --->

::: problem id=2_1 marks=3
__2.1__ Six identical right-angled triangles fit inside a rectangle as shown in the diagram.
Expand All @@ -80,10 +79,10 @@ What is the total shaded area in cm<sup>2</sup>?

![](/resources/6-20-pi/2-triangle-puzzle.png){image align="center"}

[x] 180 cm<sup>2</sup>
[ ] 348 cm<sup>2</sup>
[ ] 30 cm<sup>2</sup>
[ ] 72 cm<sup>2</sup>
* [x] 180 cm<sup>2</sup>
* [ ] 348 cm<sup>2</sup>
* [ ] 30 cm<sup>2</sup>
* [ ] 72 cm<sup>2</sup>
{.col-4}

^^^ hint id=2_1_1 marks=1
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7 changes: 3 additions & 4 deletions pages/6-21-perfect-number.md
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Expand Up @@ -48,7 +48,7 @@ __1.2__ How many odd perfect numbers are there?
Although all of the 47 perfect numbers we have found so far are even, we don’t yet know if there are any odd ones - or even how many perfect numbers there are!
:::

:::
::: problem id=1_3 marks=2
__1.3__ What is the smallest number with exactly five divisors (including the number itself)?

* [ ] 5
Expand All @@ -58,7 +58,7 @@ __1.3__ What is the smallest number with exactly five divisors (including the nu
{.col-5}
:::

::: problem=1_4 marks=2
::: problem id=1_4 marks=2
__1.4__ Four only has three factors: 1, 2, and 4.

Which other numbers have an odd amount of factors?
Expand All @@ -71,9 +71,8 @@ Which other numbers have an odd amount of factors?


## 2. What number am I thinking of?
<!--- 2018 () --->

::: problem=2_1 marks=2
::: problem id=2_1 marks=2
__2.1__ Ayliean thinks of a number, divides it by 5, adds 20 to it and ends up with the number she first thought of.

What was the number?
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2 changes: 1 addition & 1 deletion pages/6-22-rock-paper-scissors.md
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Expand Up @@ -78,10 +78,10 @@ If two such dice are rolled, and the numbers rolled added together, then how man
::: problem id=2_2 marks=2
__2.2__ What is the most likely result when rolling and adding two of these dice?

* [ ] All possibilities are equally likely
* [ ] 8
* [ ] 9
* [x] 10
* [ ] All possibilities are equally likely
{.col-5}

---
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8 changes: 6 additions & 2 deletions pages/6-23-nugget-numbers.md
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Expand Up @@ -60,7 +60,9 @@ What is the largest number of nuggets which cannot be ordered?
## 2. Numberjig puzzle

::: problem id=2_1 marks=2
__2.1__ Which number is in the center?
__2.1__ In the following puzzle, you must use all of 1, 2, 3, 4 and 5 so that the row and column have the same total.

Which number is in the center?

![](/resources/6-23-nugget-numbers/2_1-numberjig1.png){image align="center"}

Expand All @@ -73,7 +75,9 @@ __2.1__ Which number is in the center?
:::

::: problem id=2_2 marks=2
__2.2__ There are three different ways to solve this puzzle, all of which give the same total.
__2.2__ In this next puzzle, you must use all of 1, 2, 3, 4, 5, and 6 so that the row and column have the same total.

There are three different ways to solve this puzzle, all of which give the same total.

What is the magic total for the lines?

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