X is an integer drawn from a uniform distribution 1..7 (including 1 and 7). What is the probability that bit 1 of the binary representation of X is set? (Assume that the lowest bit has index 0)

X is an integer drawn from a uniform distribution 1..7 (including 1 and 7). What is the probability that bit 1 of the binary representation of X is set? (Assume that the lowest bit has index 0).



  1.     4/7
  2.     1/7
  3.     1/3
  4.     1