Question 67
If the mean of five numbers 1 , 2, 3, 5, and 'x' is 2.4, then find the value of 'x'.
Solution
If the mean of five numbers 1 , 2, 3, 5, and 'x' is 2.4.
$$2.4 = \frac{1+2+3+5+x}{5}$$
1+2+3+5+x = 12
11+x = 12
x = 12-11
x = 1
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