Question

Can 6n n being a natural number end with the digit 5

Answer 1

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.

Step-by-step explanation:

Answer 2

No.

Since 6 is an even number, all the multiples of 6 will be even numbers. The numbers ending with digit 5 will be an odd number. From this we can say that 6n will not end with digit 5.