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CBSE Class 10 Answered

can the number 6n,n being a natural number,end with digit 5?give reasons.
Asked by FEHMEEDAH NAZNEEN | 30 Aug, 2010, 09:28: PM
answered-by-expert Expert Answer
Consider the number 6n , for n a natural number.
A number ending with digit 5, must be divisible by 5.
But 6 x 5 =30.
So 6 multiplied by any multiple of 5 has last digit zero.
so the last digit of 6n can never be 5.
Answered by | 31 Aug, 2010, 10:05: AM
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