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The arithmetic mean of 210 and 220 is
1. 215
2. 25 + 210
3. 29 + 220
4. 29 + 219

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Correct Answer - Option 4 : 29 + 219

Arithmetic mean or average of number 210 and 220

⇒ Average = (210 + 220)/2

⇒ Average = 210/2 + 220/2

⇒ Average = 29 + 219      

∴ The arithmetic mean of 210 and 220 is 29 + 219      

 

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