Question

The mean of the numbers 10, 20, 30 and 40 is (a) 20 (b) 25 (c) 30 (d) 50
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Answer 1

Answer:

b) 25

Step-by-step explanation:

mean is calculated similar to average.

so, mean of 10,20,30,40 will be (10+20+30+40)/4

= 100/4 = 25

Answer 2

Answer:

a) 20

Step-by-step explanation:

Mean= Sum of the data/No. of data

= 10+20+30+40/4

= 100/4

= 20