1.

Show that 12n cannot end with the digit 0 or 5 for any natural number n

Answer» 12 ka factor2×2×3ha or jo digit 0 sa end hota ha 2 or 5 come complesari ha
12n can be written as (3×4)n and 3 and 4 are the factors of 12 and 5 is not the factor so 11n can nvr end with 0


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