A simple arithmetic problem has left internet users scratching their heads - with only a few landing on the correct solution to this elementary school-level equation.

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Learn about and revise how to solve equations using the balance method with GCSE Bitesize AQA Maths.

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Learn and revise how to plot coordinates and create straight line graphs to show the relationship between two variables with GCSE Bitesize Edexcel Maths.

Fast varying components may create instabilities in such a solution and/or simply end up in a wrong operating region. In some cases, it imposes severe limitations on the integration time step for ...

The energy harvesting system, which consists of a high-Q ferrite rod antenna and a high-efficiency rectifier, was developed to efficiently harvest power from AM broadcasting radio waves. The rectifier ...