Xiaojun and his parents ordered tickets for the opening ceremony of the 2008 Beijing Olympic Games online. They wanted 3 single-numbered tickets with consecutive numbers. Now there are 1, 3, 5, 7, 9, 11, 13, 15 in the third row There are a total of 8 tickets with consecutive numbers. How many different ways are there to buy tickets?
小军和父母3个人在网上订购了2008北京奥运会开幕式门票，他们想要3张连号的单号票，现在有第三排的1、3、5、7、9、11、13、15号一共8张连号票，一共有多少种不同的购票方式．
<gadget id="calculator">8 - 2</gadget>
<output>6</output>

<result>6</result>