In how many no. between 10 and 20 exactly Two of the digits is 1? Choose the correct choice from the following choices.
A) 25
B) 35
C) 10
D) 1
E) 15
It's simple can be solved by elimination of answer choices.   Option A and B are too large, not possible. Even CE are large to have correct choice.   Ans : 1
<result>D</result>
In how many no. between 10 and 20 exactly Two of the digits is 1?