Find the unit digit in the product (4387)^245×(622)^72
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Answer:
you should power only unit digits
as 7^245 * 2^72
you should know after power 4 the unit digit automatically
repete so you should divide to powers number by 4
next you find
7^1 * 2^4
7*6=42
so unit digit is 2
Step-by-step explanation:
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