Subject: mathqa
Question: if a coin is flipped , the probability that the coin will land heads is 1 / 2 . if the coin is flipped 5 times , what is the probability that it will land tails up on the first 4 flips and not on the last flip ?
Option: 
A: 1 / 4
B: 1 / 32
C: 1 / 16
D: 1 / 2
Answer: B