Finding unit digit of :-
122 power 122 - 343 power 343
Or
122^122-343^343
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cyclicity of 2 =4
cyclicity of 3 =4
122^122
122÷4 remainder =2
2^2=4
so unit digit is 4 of 122 power 122
343^343
343÷4 remainder=3
3^3=27
so unit digit is 7of 343 power 343
_ _ _ _ _ _4-_ _ _ _ _ _ 7
unit digit is 14-7=7
cyclicity of 3 =4
122^122
122÷4 remainder =2
2^2=4
so unit digit is 4 of 122 power 122
343^343
343÷4 remainder=3
3^3=27
so unit digit is 7of 343 power 343
_ _ _ _ _ _4-_ _ _ _ _ _ 7
unit digit is 14-7=7
112JAI:
thanx for help........
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