Using Random Number Table.

In a random number table , the random numbers are given as first thousand, second thousand, third thousand, and so on.

Every thousand has 25 rows and 1 to 4, 5 to 8 up to 37 to 40 columns.

Suppose i have to draw a sample of size 40 from a population of 10000 and I am using the 1 to 5 column for selecting the random numbers.

When the 1 to 5 column of first thousand has been finished but i have not arrived at my desire sample size yet, what is the process to select the random numbers?

Will i need to go to the `column 6 to 10` of the `first thousand` ? or go to the `column 1 to 5` of the `second thousand`?