Subject :IMO Class : Class 7
Mean of 9 observations was found to be 35. Later on, it was detected that an observation 81 was misread as 18, then the correct mean of the observations is ______.
A 40
B 41
C 42
D 43
Ans 1:
Class : Class 10
Ans 2:
Class : Class 7
Ans 3:
Class : Class 8