1. प्राथमिक एवं द्वितीयक समंकों में अन्तर स्पष्ट कीजिए। प्राथमिक समंक संग्रहण की विभिन्न रीतियों को समझाइए और उनके सापेक्ष
गुण-दोष बताइए।
Differentiate between primary and secondary data. Elucidate different methods of collecting primary data. Describe their
Comparative merits and demerits.
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primary is for instant and secondary is for school boy / girl
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