$123{\color{#3D99F6} 4 } , \phantom{c} 123{\color{#3D99F6}4}56{\color{#D61F06}7}, \phantom{c} 123{\color{#3D99F6}4}56{\color{#D61F06}7}89{\color{#20A900}10}$ Naruto creates some of the above number by concatenation of consecutive numbers, he notices such numbers are not evenly divisible by 3 when unit place number terminates at 4 , 7 ,10, 13 or in the sequence of $3m +1$ where $m\in\mathbb N$ .

Is it true that the number created in that way is not
**
evenly
**
divisible by 3?

Yes
Cannot be determined.
No

**
This section requires Javascript.
**

You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.

Digit sum is $\dfrac{(1+3m+1)(3m+1)}{2}=\dfrac{(3m+2)(3m+1)}{2}$ ,which is not a multiple of 3.