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Puzzle No4 – Solving Siblings
Puzzle No4 - Solving Siblings
Here at Design for Need we love problem solving. Can you solve this week's puzzle - Solving Siblings?
27th September 2017 - Design for Need, Puzzle
By Matt McClumpha
Welcome back to our puzzle segment, we are officially half way through this series of puzzles. This week you have to work out how many siblings there are in this family, based on what three of the siblings say. Don't worry, they're all telling the truth.
The Problem
Hint 1 - Out of A, B and C who is the oldest and who is the youngest?
Hint 2 - A is the oldest, followed by B and C. Given that A has an older brother and C has a younger sister, it should make the puzzle simpler.
Hint 3 - Try mapping out all the conditions that has been given to you in hint 2 and note down the genders of each sibling.
The Solution
The lowest possible number of siblings is six. You can work out that there are three female siblings in this family by the fact that A says he has three younger sisters. Likewise, you can work out that there are at least three male siblings in the family by the fact that C says she has three older brothers. So in total there are six siblings.
Matt McClumpha
When I’m not designing our latest innovation or working on our website, I occasionally like to write blogs. Whether it be about our project work abroad, designing for international development or even a selection of intriguing puzzles for you to solve.