If you toss a coin with nothing 10 times, what is the probability of it coming up heads?
用一枚一无的硬币掷10次，正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>