Mathematics · Average

एक उपहार बॉक्स में 10 चूड़ियाँ हैं। पहली 4 चूड़ियों का औसत वजन 30 ग्राम है और शेष 6 चूड़ियों का औसत वजन 31 ग्राम है। सभी चूड़ियों का कुल औसत वजन (ग्राम में) ज्ञात कीजिए।

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