基于给定概率R随机生成数字

I need help creating a for loop to fill in a 5X5 table using R. Each row will be one observation without replacement. The number range is 1:75, and respectively I have probabilities for each of these numbers. So how would I go about creating a random number generating code that takes into account the specific probability for each number? I need help creating a for loop to fill in a 5X