Question
The mean of 10 observations is 8. One more observation
is added, and the new mean becomes 9. What is the value of the 11th observation?Solution
The mean of 10 observations=18 Total =10×8=80 After including the new observations =10+1=11 New mean =11 Then total=11×9=99 13th observations =99-80 =19.
What is the position of Z with respect to her sister?
If Z is at extreme right end, then how many persons are sitting Z and H?
Six persons, R, S, T, U, V and W sit along a linear row and face in the north direction. The distance between two adjacent persons is the same. Two pers...
Which of the following combination is correct?
Refer to the following letter sequence and answer the question given below:
Left) P, T, S, A, Q, R, G, P, Q, N, D, F, L, H, R, F, A, N (Ri...
How is T related to R?
Seven girls Ms. KT, LT, MT, NT, OT, PT, and QT are sitting in a straight line facing the same direction. Four girls are sitting between QT and PT. MT is...
Statement:
No Men is a Husband.
Some Boy is Men.
Only a few Husband are Educated.
Conclusion:
All Educated is Men...
How many seats are between M and S when counted from the left of S?
P, Q, R, S, T, U , V and W are sitting around a circular table facing the centre. Q sits second to the right of S, who is not an immediate neighbour of ...
Relevant for Exams:
