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Math Enrichment for grades 6-8

Math Enrichment for grades 6-8

Math Enrichment for grades 4-8

Math Enrichment for grades 4-8

Math Enrichment for Elementary kids

Math Enrichment for Elementary kids

Math Enrichment for grades 6-8

Math Enrichment for grades 6-8

Math Enrichment for Middle School

Math Enrichment for Middle School

Math Enrichment for Upper Elementary

Math Enrichment for Upper Elementary

Math Enrichment for Middle School

Math Enrichment for Middle School

Math Enrichment for Middle School

Math Enrichment for Middle School

Math Enrichment for grades 6-8

Math Enrichment for grades 6-8

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Vasudha Uddavan

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Math Enrichment for grades 6-8

Exponents and Unit's digit math problems! Ans: The Unit's digit of 5^408 is 5. So the unit's digit of 5^408-3 is 2. None of the perfect squares can have a unit's digit of 2. Hence 5^408-3 cannot be a perfect square