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The numeral in the units position of 211870 + 146127 × 3424 is _____.
(Important : you should answer only the numeric value)
Correct answer is '7.0'. Can you explain this answer?
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The numeral in the units position of 211870 + 146127 × 3424 is _...
The numeral in the units position of 211870 is 0.
The numeral in the units position of 146127 is 7.
The numeral in the units position of 146127 is 7.
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The numeral in the units position of 211870 + 146127 × 3424 is _...
We know that unit digit is going to repeat itself after the power 4. example:- unit digit of x^(4n+1)=unit digit of x^(1).
1) unit digit of 211^(870)= unit digit of 211^(2)= unit digit of 1^(2)=1.
2) similarly, unit digit of 146^(127)= unit digit of 146^(3)=unit digit of 6^3=6.
3) similarly unit digit of 3^(424)=1.
so, unit digit of 211^(870)+211^(2)×146^(127)= 1+6×1=7.
1) unit digit of 211^(870)= unit digit of 211^(2)= unit digit of 1^(2)=1.
2) similarly, unit digit of 146^(127)= unit digit of 146^(3)=unit digit of 6^3=6.
3) similarly unit digit of 3^(424)=1.
so, unit digit of 211^(870)+211^(2)×146^(127)= 1+6×1=7.
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The numeral in the units position of 211870 + 146127 × 3424 is _____.(Important : you should answer only the numeric value)Correct answer is '7.0'. Can you explain this answer?
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