An interesting property of a factorial is that the factorial of a number is equal to the startingnumber multiplied by the factorial of the number immediately below it.
The counting backward aloud from an arbitrary startingnumber to indicate the time remaining before an event or operation, such as the launching of a missile or space vehicle.
的翻译是:从一个落后的数数声,任意起始编号指示剩余的时间事件发生前的一或操作,如发射导弹或航天器。
3
Starting around 2012, requests for the visas rose sharply; from 2011 to 2016 the number of visas issued more than doubled.