There are several things we can do to improve our chances of making the correct choice.First of all, we must think carefully about the dicision we have to make.It is important to weigh all the pros and cons and evaluate our options.Second,we have to establish our priorities.We must know what we need and like.Third,with these priorities in mind,we can search for the best solution.Finally,we should make a firm decision and commit ourselves to it.Ater all,we are responsible for our choices.
In conclusion,the most important thing in making s decision is careful consideration.It will help us to clarify our needs and narrow our choices.Once we have done that it will be much easier for us to make the right decision.
个位数9个， 9个位数十位数90个，180个位数
百位数900个， 2700个位数
189＜2002＜2889，显然到2002个位数时，三位数还没有排完
（2002-189）÷3=604 余1
数从1 排到100+603=703，最后一位数字是7，
第2002个数字是7.
