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BBQ brainteaser Brainteaser

by Jasmine, 18 September 2019 | 0 comments

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Written by Kerry Dent Difficulty: Tricky On the expedition’s small BBQ, only two potato cakes will fit at the same time. If it takes five minutes to cook one side of a potato cake and five minutes to cook the other side, what will be the minimum time required to cook three potato cakes on…

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The difficult dial Brainteaser

by David, 4 September 2019 | 0 comments

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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 Brainteaser

by David, 21 August 2019 | 0 comments

Small marsupial with large back legs and tail for hopping.

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 Brainteaser

by David, 7 August 2019 | 2 comments

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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 Brainteaser

by David, 24 July 2019 | 1 comments

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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. Can you work out how many pieces of each fruit are in…

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The speediest cyclist Brainteaser

by David, 10 July 2019 | 0 comments

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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 Brainteaser

by David, 26 June 2019 | 4 comments

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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 Brainteaser

by David, 12 June 2019 | 12 comments

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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. If you pick two of these cards at random, are they more likely to be the same colour or different…

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Taping tarps brainteaser Brainteaser

by David, 29 May 2019 | 3 comments

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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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Sibling survey Brainteaser

by David, 15 May 2019 | 3 comments

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Emily has twice as many brothers as she has sisters. Her brother Bill has one more sister than he has brothers. How many boys and girls are in Emily and Bill’s family?

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