A question of a number

[atishree]

If m+2=10^n, where m and n are positive integers, n=?
(1) The sum of digits of m is 116.
(2) n>10

[newyear]

The number m is 9999....(x times)8 e.g 999998 or something like that.
So sum of digits = 9*x +8 =116
So x=12
So m is 9999999999998 (12 times 9 followed by 8)
m+2 = 10^13

So n=13

[atishree]

oh cool! You mean to say ans is A, the statement first is sufficient.

[newyear]

see i do not know how these GMAT questions work out. I do not know what is A,B etc. Sorry. But I suppose you can infer from the answer.

[newyear]

I used only (1) to get the result
(2) was not necessary if that is what you mean