The smallest number in the list $\{1.0101,1.0011,1.0110,1.1001,1.1100\}$ is
(A) 1.0101
(B) 1.0011
(C) 1.0110
(D) 1.1001
(E) 1.1100
Since each of the numbers is between 1 and 2 , we consider the tenths digits.

The numbers 1.0101, 1.0011 and 1.0110 are between 1 and 1.1, while 1.1001 and 1.1100 are both greater than 1.1.

We may eliminate answers (D) and (E).

Next, we consider the hundreths digits.

While 1.0101 and 1.0110 each have a 1 as their hundreths digit, 1.0011 has a 0 and is therefore the smallest number in the list.

The ordered list from smallest to largest is $\{1.0011,1.0101,1.0110,1.1001,1.1100\}$

ANsWER: (B)