N is a natural no formed by writing ,in the ascending order,the first 1002 whole numbers one after another.Find the remainder when N is divided by 9
Is the remainder 2??
Remainder of (N/9) = Rem(Sum of the digits of N/9) ... U CAN CHECK IT. Now N=12345......999 1000 10001 UPTO 9999 no rema will be 0 for 1000 rem= sum of digit=1 for 1001 remainder= 2 therefoe ans= 1+2 =3
He gr8... thanks a lot vicky.
We can calculate the sum of digits from 0 to 1001. \( \color{Black}{\Rightarrow \Large {1002 \over 2}({0 + 1001 )}}\) Arithmetic sequence ^
\( \color{Black}{\Rightarrow 501(1001) = ......1 }\)
Hey lil correction: my ans is for digits upto 1001 for ur ques ... 1002 rem (when div by 9)= 3 net ans= 1+2+3=6
501501 ===> 5 + 1 + 1 + 5 = 1 + 2 = 3 3 is not divisible by 9, but 9 - 3 = 6
@Aprajita111 Did you understand?
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