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प्रश्न
Find the unit digit of the following numeric expression.
1000010000 + 1111111111
उत्तर
1000010000 + 1111111111
In 1000010000 the unit digit of base 10000 is 0 and power is 10000
Unit digit of 1000010000 is 0
In 1111111111 the unit digit of base 11111 is 1 and power is 11111
Unit digit of 1111111111 is 1
Unit digit of 1000010000 + 1111111111 is 0 + 1 = 1
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