allery15 क्रमांकांची सरासरी 12 आसा. पयलें 8 सरासरी 11 आनी निमाणें 8 सरासरी 14. 8th क्रमांक असो आसा:
A20
B18
C22
D24
Answer & Solution
Correct answer: A. 20
1. सगळ्या 15 आंकड्यांची वट्ट संख्या 15 x 12 = 180. 2. पयले 8 वट्ट 8 x 11 = 88. 3. निमाणे 8 वट्ट 8 x 14 = 112. 4. ते दोन गट जोडल्यार 88 + 112 = 200 मेळटात, पूण ताका लागून फकत 15 आंकड्यांखातीर 16 सुवाती मेजतात. 5. 8वो आंकडो म्हळ्यार दोन फावटीं मेजल्लो आंकडो, देखून तो 200 - 180 = 20 इतलो आसता _स्त्रोत: अभ्यासक्रम गणित, अध्याय 13 'सांख्यिकी', S13.2 गट केल्ल्या डेटाचें सरासरी_
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