Progression (Sequence and Series)Hard
Question
If the sum of four numbers in A.P. be 48 and that the product of the extremes to the means is product of 27 to 48 then the numbers are-
Options
A.3,9,15,21
B.9,5,7,3
C.6,10,14,18
D.None of these
More Progression (Sequence and Series) Questions
sum to infinity of the following series + .... shall be-...If sum of infinite G.P. is x and sum of square of its terms is y, then common ratio is-...If x, y, z are in A.P. and tan-1x, tan-1y and tan-1z are also in A.P., then...If a,b,c are in A.P., then are in-...Let σ be the standard deviation of n observations. Each of the n observations is multiplied by a constant c. Then ...