Tow times 1, that means in binary digits 11, stands 4 (I mean for) 3.
Only one time 1 stands for 1.
One, not two times 1 is the then half of 11.
Then, and only under this premisses, 11 is the half of 1 in binary,
and 3 (dec) is then double 1 in binary numbers.
u have to mix bin and dec in an not very legal manner, then
proscrutes could abuse the 1 as the half of 3.