Question

Can 15n end with the digit 0 for any natural number n. Justify your answer

Answer 1

Answer:

Step-by-step explanation:

→This means the prime factorization of 15ⁿ should contain prime factors 2 and 5. It does not have the prime factor 2 but have 3 and 5, Since 2 is not present in the prime factorization, there is no natural number nor which 15ⁿ ends with digit zero. So,15ⁿ can not end with digit zero.

Answer 2

We know that all the factors of 5 always end with the end digit as 5 .15 is a factor of 5,so it's end digit can't be zero .Therefore ,15 cannot have an end digit zero for any natural value of n.

E.g..15×5=225 which is not end by 5.

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