Yesterday I asked chatgpt to compute the probability that two words of five letters both began with the same three letters and it could not solve it. It gave me about 10 different results but all were wrong, it seems the number five mislead the algorithm. Another question was computing the variance of the sum of 60 dices but omitting the results where the sum was greater than 200, the reasoning was incorrect in all cases, finally I suggested creating a simulation to estimate the variance in R, but it made an error about the var command in R suggesting that it has an option for the degree of freedom.