alleryफलंदाजाची 16 डावांचेर सरासरी 36 आसता. 17th डावांत सरासरी 38 मेरेन वाडोवपा खातीर ताणें अशे गूण मेळोवचे पडटले:
A58
B64
C76
D70
Answer & Solution
Correct answer: D. 70
1. आतां मेरेन धांवड्यो वट्ट 16 x 36 = 576.
2. 17 डावांत सरासरी 38 धांवड्यो केल्यार नवी वट्ट 17 x 38 = 646 आसूंक जाय.
3. गरज आशिल्लीं धांवड्यो म्हळ्यार फरक, 646 - 576.
4. म्हणल्यार ताणें 70 गूण मेळोवचे पडटले.
5. एक शॉर्टकट तपासणी: नवी सरासरी 2 चड आसता, आनी आदल्या 16 डावांक दरेकीं 2 टॉप अप करपाची गरज आसता, देखून 38 + 32 = 70.
_स्त्रोत: अभ्यासक्रम गणित, अध्याय 13 'सांख्यिकी', S13.2 गट केल्ल्या डेटाचें सरासरी_
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