A) 18
B) 17
C) 51
D) 75
Correct Answer: A
Solution :
Sum of 5 observations\[=5\times 15=75\] Sum of first 3 observations\[=3\times 14=42.\] Sum of the last three observations\[=3\times 17=51\] \[\therefore \] Third observation \[=42+51-75=93-75=18\]
You need to login to perform this action.
You will be redirected in
3 sec
