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Memory Based GATE DA 2024 | Question: 26

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If average of 50 numbers is 40 then sum of all the 50 numbers= 50x40=2000

if we add 142 , the the total sum will be 2000+142=2142

and, the new sum will be the total of (50+1) numbers as we have added a new number.

So, the new average = new sum/ total number of samples= 2142/51= 42
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