2 MATHCOUNTS QUESTIONS: NEED ANSWERS IN 1 HOUR OR LESS!!!

Mathematics
Tutor: None Selected Time limit: 1 Day

175. How many distinct three-letter strings can be formed using three of the five letters in the word SILLY?

180. What is the units digit of the product 2^2015 × 7^2015?

Mar 21st, 2015

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Mar 21st, 2015

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Mar 21st, 2015
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Mar 21st, 2015
Dec 4th, 2016
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