SSC
Sample Paper
SSC CHSL (10+2) Sample Test Paper-13
question_answer
The arithmetic mean of 10 numbers was computed as\[7.6\]. It was later discovered that a number 8 was wrongly read as 3 during the computation. What should be the correct mean?
A)\[7.1\]
B)\[7.6\]
C)\[8.1\]
D)\[8.6\]
Correct Answer:
C
Solution :
Required mean \[=\frac{10\times 7.6-3+8}{10}\] \[=\frac{81}{10}=\]