# Blog

## Perimeter pickle

By David Shaw, 2 October 2019

Difficulty: Tricky Imogen has had enough of her goats getting into her veggie patch. She’s bought wire and poles, but before she starts building, she must work out what shape fence she needs.

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## BBQ brainteaser

By Jasmine Fellows, 18 September 2019

Written by Kerry Dent Difficulty: Tricky On the expedition’s small BBQ, only two potato cakes will fit at the same time.

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## The difficult dial

By David Shaw, 4 September 2019

While working on an old weaving machine, Aisha spied a dial that needed repairing. The dial had numbers counting upwards, evenly spaced around the outside. Although she couldn’t see the whole dial, she could see that the number 6 was directly opposite 17. Can you work out how many numbers there are on the dial?

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## Pademelon paddocks brainteaser

By David Shaw, 21 August 2019

Fred is a biologist doing an experiment with pademelons. They have a square paddock and four feeding bowls. They also have two laser detectors that each shoot a straight beam all the way across the paddock.

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## A sign of the times brainteaser

By David Shaw, 7 August 2019

Terri was doing sums for her signwriting business. She worked out that one-third of six and two-thirds of eleven together made seven. Her maths might seem wonky, but she was completely correct. Can you work out what she was trying to do?

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## The full fruit bowl brainteaser

By David Shaw, 24 July 2019

There are three types of fruit in the fruit bowl: All pieces of fruit are bananas, except for three of them. All pieces of fruit are apples, except for four of them. All pieces of fruit are oranges, except for five of them.

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## The speediest cyclist

By David Shaw, 10 July 2019

Alice, Bernice and Claire are all speedy bike riders. They decided to race against each other to find out who is fastest cyclist. They ran three races together. In two races, Alice beat Bernice. In two races, Bernice beat Claire.

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## The 63 dollar question

By David Shaw, 26 June 2019

On Dr Vine’s desk there is some money. There are six pieces of Australian money. The money adds up to $63.

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## Red and black brainteaser

By David Shaw, 12 June 2019

I have four playing cards: two of them are black and two are red. I turn them face down so you can’t see the colours, and shuffle them so you don’t know which is which.

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## Taping tarps brainteaser

By David Shaw, 29 May 2019

Gerri has two identical square tarpaulins. Unfortunately, these tarps aren’t quite big enough to cover the brand new spa bath. So Gerri’s decided to cut the tarps and tape them together to make a bigger tarp. They want their final tarp to be a square, and they want it to be as big as possible.

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