perplexus.info :: Just Math : A Perplexing Expression

A Perplexing Expression (Posted on 2005-10-14)

Using only math symbols (no functions like sin, cos, log, etc.) create an expression with only two 2s equal to 5 (no other digits or constants).

See The Solution Submitted by Brian Smith

Rating: 3.5000 (6 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)

Reaching, perhaps

| Comment 1 of 18

How about ||P(P({2}))||+||{2}|| ?

In words: the cardinality of the power set of the power set of the set with only the element 2 plus the cardinality of the set with only the element 2.

Posted by bernie on 2005-10-14 18:43:58

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