Question
Find the unit digit of 3323Â + 4235
Solution
Unit digit of 3323Â = Unit digit of 34 X 5 + 3Â = Unit digit of 33Â = Unit digit of 27 = 7
Unit digit of 4235Â = Unit digit of 24 X 8 + 3Â = Unit digit of 23Â = 8
Required unit digit = Unit digit of (8 + 7) = Unit digit of 15 = 5
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