Hindi, asked by lkdelhi9129, 5 hours ago

12 लड़कों की औसत आयु 15 वर्ष है यदि पहले 2 लड़कों की औसत आयु 20 वर्ष हो तो बाकी लड़कों की औसत आयु क्या होगी

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Answered by 11412167

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