Question

The standard mean of 3 numbers is 29.The standard mean of 2 of these numbers is 38

Answer 1

sum of 3 numbers=29*3=87
sum of 2 numbers=38*2=76
3rd number=87-76=11

Answer 2

Solution:-

Two numbers with which their average is 38:

39 and 37

Now, for the third number(x):

(39+37+x)/3=29

76+x=87

x=11

11+37+39=87

87/3=29

37+39= 76

8

76/2=38

Numbers: 11, 37, 39 with 11 being the third number.

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@GauravSaxena01