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July 31st, 2017, 11:23 AM   #1
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Obtain 64 with two 4s

This has been done before, but still it could be interesting. You can do anything, only out of all the numbers, you can use only 4, and only two times.
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Last edited by skipjack; July 31st, 2017 at 11:29 AM.
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July 31st, 2017, 11:31 AM   #2
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I have no patience.

$\displaystyle \sqrt{\sqrt{\sqrt{4^{4!}}}}$
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July 31st, 2017, 11:43 AM   #3
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Or $\sqrt{\sqrt{√4}}^{4!}$ and the like.
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July 31st, 2017, 12:42 PM   #4
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4!!^sqrt(4) = 64
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July 31st, 2017, 12:46 PM   #5
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Using only one 4:
ounces in 4 pounds = 64
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July 31st, 2017, 01:27 PM   #6
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Quote:
Originally Posted by Denis View Post
Using only one 4:
ounces in 4 pounds = 64
using no 4's ...

individual squares on a checkerboard = 64

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July 31st, 2017, 04:07 PM   #7
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4 << 4

(4 represented in binary, bit shifted left 4 times).

Edit: Originally had 'binary 4' which I don't like.
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Last edited by jks; July 31st, 2017 at 04:11 PM.
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August 25th, 2017, 08:04 PM   #8
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4×(4 squared)
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August 26th, 2017, 10:00 AM   #9
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Using three fours: 4 * 4 * 4 = 64
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August 26th, 2017, 10:12 AM   #10
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Hoempa, go stand in the corner for 64 minutes...
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