Question
Download Solution PDF12 సంఖ్యల సగటు 15. ఒకవేళ 41 అనే సంఖ్యని కూడా జతచేరిస్తే, 13 సంఖ్యల సగటు ఎంతవుతుంది?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFసంఖ్యల యొక్క సగటు = సంఖ్యల మొత్తం/ మొత్తం సంఖ్యలు
మొదటి 12 సంఖ్యల సగటు 15
12 సంఖ్యల మొత్తం = 15 × 12 = 180
కొత్త సంఖ్య 41 ని జతచేయాలి
13 సంఖ్యల యొక్క సగటు = (12 సంఖ్యల మొత్తం + 13వ సంఖ్య)/13
సగటు = (180 + 41)/13 = 221/13 = 17
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