Progression (Sequence and Series)Easy
Question
The mean of a set of numbers is 
. If each number is multiplied by λ, then the mean of the new set is-
. If each number is multiplied by λ, then the mean of the new set is-Options
A.
B. + λ
+ λC.λ
D.None of these
More Progression (Sequence and Series) Questions
If the mth term of a H.P. be n and nth term be m, then the rth term will be-...The weighted mean of first n natural numbers, whose weights are equal to the squares of corresponding numbers, is...Three numbers are in A.P. The product of the extremes is 5 times the mean, also the sum of the two largest is 8 times th...Let A be the sum of the first 20 terms and B be the sum of the first 40 terms of the series 12 + 2·22 + 32 + 2&mi...The mean of discrete observations y1, y2,....yn is given by-...