Question

the mean of number 10,20,30,40 is​

Answer 1

$\frac{10 + 20 + 30 + 40}{4}$

$= \frac{100}{4}$

$= 25$

25 is the mean

Answer 2

$(10 + 20 + 30 + 40) \div 4 = 25$

therefore mean of the given numbers is "25"