How do we decide the number of clusters to use while implementing the k-means clustering algorithm?

@adityashrm21 wrote:

Hi,

While implementing k-means clustering algorithm in a model, how should we decide the number of clusters that we want to use in the model?
I have read that we need to specify the right number of clusters else an incorrect choice of the number of clusters will invalidate the whole process.
Do we just try out different number of clusters until we find the best number or is there a way that we should follow to get the desired number of clusters for the problem?

Thanks

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