यदि 5 संख्याओं का औसत 20 तथा प्रथम 4 संख्याओं का औसत 12 हो तो पाँचवी संख्या होगीः
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Answered by
1
Answer:
8
Step-by-step explanation:
sum of first 5=20
sum of first 4=12
so last number
=20-12
=8
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