Question

Is there any natural number n for which 4n ends with the digit 0? Give reason in support of your answer. ​

Answer 1

Answer:

Yes.

Step-by-step explanation:

Consider, n=5.

thus, 4n=4×5=20, which ends in the digit 0.

Consider n=10.

thus, 4n=4×10=40, which again ends in the digit 0.

Remember, if n is a multiple of 10, the product will always end in the digit 0. Also, if any multiple of 5 is multiplied by an even number, the product ends with the number 0.

Hence proved.

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Answer 2

there is no natural number n for which 4n ends with the digit zero.