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Calling all positive integers ...
Posted 06 May 2013 - 05:20 AM
How many pairs of mutually prime positive integers sum to 2x10250?
You should be able to do this on the back of an envelope, and probably can't count the pairs with a simple program (before the earth freezes.)
Pairs differing only in the order of addition count as 1 pair, not as 2 different pairs.
Vidi vici veni.
Posted 06 May 2013 - 09:42 PM
Agree with Superprismatic. I think u have counted (1, 2*10^250-1) also.
Posted 07 May 2013 - 02:55 PM
Spoiler for I get
Spoiler for consider
It seems rather difficult to pull the wool over the Denizens!
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