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'Weekly Problem 52 - 2007' printed from http://nrich.maths.org/

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Given that $4^x+4^x+4^x+4^x = 4^{16}$, what is the value of $x$?

 

If you liked this problem, here is an NRICH task which challenges you to use similar mathematical ideas.

 

 

 

This problem is taken from the UKMT Mathematical Challenges.

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