Thread: Math Quiz
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Unread 11-09-2013, 23:02
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Re: Math Quiz


If anybody's still interested here's the solution:

The number of proper subsets of a set containing N elements is 2N -1.

For N=30000, the number of proper subsets is 230000 -1.

The "-1" totally insignificant for such a large N.

Find "x" such that 10x = 230000...

take log10 of both sides:

log10(10x) = log10(230000) .... x = 30000*log10(2) = 9030.9

109030.9 = 100.9 * 109030 = 7.94E9030


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