Take 2 numbers from the 100 natural numbers 1-100, what is the probability that their sum is less than or equal to 50? How to calculate? It's not the same after checking for a long time! I think we can only take two numbers from 1 to 49, because as long as there is one number greater than or equal to 50, we can't do it. So I think the numerator should be C above 2 below 49, and the denominator should be C above 2 below 100,

That's right. Because as long as there is one greater than 50, it can't be done

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