Is the number divisible by 4
x = 1 2 3 4 5 6 7 8 9 8 7 6 5 4 3 2 1 6
Is x divisible by 4?
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2 solutions
@Vinayak Srivastava , don't make this like a kindergarten books with the largest font possible.
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Oh, sorry Sir. I will not use Huge or Large next time, can I add LaTeX for the number 4 like 4 , please?
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No need to use LaTex for text. It is difficult and not the standard here in Brilliant. The text in LaTex will not flow according to screen size. It will be difficult to read when you use phone.
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@Chew-Seong Cheong – I was asking about numbers, but now I also think its not needed. Sorry for disturbing.
4 1 2 3 4 5 6 7 8 9 8 7 6 5 4 3 2 1 6 = 1 2 3 4 5 6 7 8 9 8 7 6 5 4 3 2 0 0 ( = 1 2 3 4 5 6 7 8 9 8 7 6 5 4 3 2 × 1 0 0 ) + 1 6 = 1 2 3 4 5 6 7 8 9 8 7 6 5 4 3 2 × 2 5 + 4
Because 123456789876543216 / 4 = a whole number(30864197469135804), 1 2 3 4 5 6 7 8 9 8 7 6 5 4 3 2 1 6 ≡ 0 ( m o d 4 )
Last two digits divisible by 4 ⟹ Number divisible by 4.