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# Find the unit digit of: (1^1!) + (2^2!) + (3^3!) + ... (100^100!)

Author Message
Intern
Joined: 09 Sep 2017
Posts: 7
Find the unit digit of: (1^1!) + (2^2!) + (3^3!) + ... (100^100!) [#permalink]

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13 Sep 2017, 10:05
Options: A) 5
B) 6
C) 7
D) None of these

--== Message from GMAT Club Team ==--

This is not a quality discussion. It has been retired.

If you would like to discuss this question please re-post it in the respective forum. Thank you!

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Math Expert
Joined: 02 Sep 2009
Posts: 46305
Re: Find the unit digit of: (1^1!) + (2^2!) + (3^3!) + ... (100^100!) [#permalink]

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17 Sep 2017, 08:48
NiCChamp wrote:
Options: A) 5
B) 6
C) 7
D) None of these

--== Message from GMAT Club Team ==--

This is not a quality discussion. It has been retired.

If you would like to discuss this question please re-post it in the respective forum. Thank you!

To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.

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Re: Find the unit digit of: (1^1!) + (2^2!) + (3^3!) + ... (100^100!)   [#permalink] 17 Sep 2017, 08:48
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