MHT CET 2024 Mathematics question

The mean of n observation is . If three observation n + 1, n -1, 2n - 1 are added such that mean remains same, then value of n is

(A)
(B)
(C)Correct
(D)

Answer: (C)

Solution

The sum of the original observations is . After adding the three observations (their sum is ) there are observations, and the new mean equals : . So ,

See the full step-by-step solution

Create a free account to read the complete working, and practise questions like this in a timed test.

Create a free account

Question ID VK-093147