Formal:
* पञ्चाशत् (pañcāśat) - This is the most common and formal way to say 50.
Informal:
* पचास (pacās) - This is a more informal and conversational way to say 50.
Numbers as adjectives:
* पञ्चदश (pañcadaśa) - This literally means "fifteen" and is used when "50" modifies a noun. For example, "पञ्चदश वर्ष (pañcadaśa varṣa)" means "fifty years".
It's important to note that the pronunciation of Sanskrit words can be complex, and there are different schools of thought on the correct pronunciation. You can find resources online or consult a Sanskrit scholar for more accurate pronunciation.