Mind Bender # 15 : Solution

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The challenge in the last Mind Bender was to calculate the value of “X” in the following equation …

p=. Solving for "X"

This time, there were a number of people who came up with the correct answer: Ron Drewitz, Daniel Hayden, Dominic Gatling, John Murphy, Margaret, Elka Melman, Tracey Bryan, Matt, Geoff and Vince Psaradakis.

So, well done to you all.

The secret is to square both sides, so that you then have …

p=. Click to enlarge

However, we actually started out knowing that …

p=. What we already know

So we can now make a simple substitution, as follows …

p=. Simplifying things

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