Xiao Ming tosses a coin and gets tails 4 times and heads 2 times, what is the probability that he flips the coin 7 times and gets tails
小明抛硬币，4次反面朝上，2次正面朝上，那么他抛第7次硬币反面朝上的可能性是多少
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>