show that 12^n can not end with digit 0 or 5 for any natural no. n
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THE EXPRESSION CAN NEVER END WITH 0 OR 5 AS IT'S PERIOD BEING 4 AND SWITCH NUMBER BE 1,2,3,0, ...
IT REPEATS AFTER EVERY FOURTH VALUE GIVEN TO "n"
WHICH CONCLUDES AT THE VALUES OBTAINED AFTER SWITCHING IS 2 ,4 ,8 AND 6 ... AGAIN 2 , 4 , 8 AND 6 AND SO ON ...
HENCE IT CAN NEVER END WITH 0 OR 5
IT REPEATS AFTER EVERY FOURTH VALUE GIVEN TO "n"
WHICH CONCLUDES AT THE VALUES OBTAINED AFTER SWITCHING IS 2 ,4 ,8 AND 6 ... AGAIN 2 , 4 , 8 AND 6 AND SO ON ...
HENCE IT CAN NEVER END WITH 0 OR 5
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