7*7*7*7......153 times what is the digit at the unit place of the product
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Step-by-step explanation:
71=7
72=49
73=343
74=2401
75=16807
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Cyclic repetition of 7 is 4. Now, when 823543 is divided by 4 it gives remainder 3 Hence the last digit of 7823543=777 is 3
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