Question

the mean of first 5 observation is 15. if mean of first 3 nos is 14 and mean of last 3 nos is 17 find the third no
​

Answer 1

Answer:

Sum of first 5 observation=5(15)=75

Sum of first third observation =3(14)=42

Sum of last 3 observation=3(17)=51

3rd number=42+51-75=93-75=18.

Follow me and mark it brainliest.

If you have any doubts ask me.

Happy independence Day