Q2. When was National Sample Survey established? राष्ट्रीय प्रतिदर्श सर्वेक्षण की स्थापना कब हुई?
1947
1949
1950
1960
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Q2. When was National Sample Survey established? राष्ट्रीय प्रतिदर्श सर्वेक्षण की स्थापना कब हुई?
1947
1949
1950
1960
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Answer:
1960 me sayad from my think.ok....