The last digit

Number Theory Level 1

N N is a positive integer that is a multiple of 10. What is the last digit of N N ?


The answer is 0.

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Arron Kau by Arron Kau

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5 solutions

Shubhankar Gupto
Aug 12, 2013

Any number which is a multiple of 10 has a 0.

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Moderator note:

Be clear in your explanations, which helps communicate your ideas to others.

What does "has a 0" mean? Do you mean "ends with a 0" or "has a 0 within it"?

owwww nice i dont know that!

Angelo Bilien - 7 years, 10 months ago

Definitely it ends in a 0. Sorry.

Shubhankar Gupto - 7 years, 10 months ago

It ends with a 0 because you know 5(2)=10 but it had to be a two digit number so it had 10 be 10(1)=10

Alexis Ingram - 7 years, 10 months ago

0

Soufiane Mehiriz - 7 years, 9 months ago
Rayhan Hossan
Dec 1, 2014

0 is the right answer

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Lucas Pacífico
Aug 18, 2013

0,10,20,30,40,50,60,70,80,90,100

0 Helpful 0 Interesting 0 Brilliant 0 Confused

positive integer that is a multiple of 10 is always had 0 on their last digit.

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Girija Lenka
Aug 13, 2013

let the integer = a a x 10 = a0 so, the last digit is 0

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