@AwalGarg yeah, that's sort of my question. Do we consider the Trimurti to be one entity or a triumvirate-like conglomerate?
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First, lets look at the history of the Trimurtis. There are a few variations, lets pick a general one.
One of the Trimutis come into existence (don't ask me how). From the Nabhi of him, is born a Lotus/egg out of which come one of the other trimurtis and from the eye of the original trimurti is born the third Trimurti.
It can be inferred from this, that basically, there is only one original God who divided himself into 3 parts each with a specific business. So originally, Trimurti was The God, who divided himself into the trimurtis.
If you ask me now that are the trimurtis single or not, then they are one when you put them together. They are not single in a sense that they different parts of the same thing (The God).