Question
The mean age of 30 students was calculated as 15 years.
However, it was later discovered that one student's age was mistakenly entered as 15 years instead of 9 years. What is the accurate average age of the students?Solution
Sum of ages of 30 students = 30 x 15 = 450 years Actual sum of ages of 30 students = (450 - 15 + 9) = 444 years Actual average of 30 students = (444/30) = 14.8 years
Which student is immediate taller than G?
What could be the possible height of R?
There are five persons Q, W, R, T and Y of different weights. T is heavier than Q and Y but not the heaviest. W is the lightest. Who among the following...
If T secured 50 marks, then how many students fail the examination?
E, F, G, H and I are five sisters. G is younger than only two persons. F is older than E but younger than G. I is not the oldest. Who is the oldest?
W is taller than K who is shorter than U. O is taller than D but shorter than K. U is shorter than W. Who is the tallest?
How Many Persons are heavier than person A?
Who among the following have equal number of students ahead and behind to him?Â
There are five students U, V, W, X and Y participating in a cricket match. V scores lesser run than only W and U. X scores lesser run than V and more th...
Which box is fourth heaviest?
Relevant for Exams:
