ParthKohli
These letters are the same when they are made upsidedown: H, I, N, O, S, X, and Z.



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EvonHowell
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And what is the Question?

ParthKohli
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How many threeletter "words" can be formed that are the same when they are upsidedown?

goformit100
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Fake Question....... not a mathematics question

ParthKohli
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At first, I thought of \(7P3\), but then I saw that repetition is allowed, so I thought of \(21P3\)

ParthKohli
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@goformit100 It's called combinatorics.

ParthKohli
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Neither is correct.

goformit100
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Ok Then :)

LOOSEr
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7*7*1

LOOSEr
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so, 49

ParthKohli
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how the 1?

ParthKohli
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it might be 7 * 7 * 7

LOOSEr
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The first and the last letter must be same

ParthKohli
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Oh yes!

RadEn
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looks s and z made upsidedown, they were not same :)
dw:1360990401416:dw

ParthKohli
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@RadEn That is the mirror image, not the upsidedown image. :P

RadEn
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Ohhhh... missunderstanding :)