Progression (Sequence and Series)Hard
Question
If fourth term of an A.P. is thrice its first term and seventh term − 2 (third term) = 1, then its common difference is-
Options
A.1
B.2
C.- 2
D.3
More Progression (Sequence and Series) Questions
If Sn denotes the sum of n terms of an A.P., then Sn+3 − 3Sn+2 + 3Sn+1 − Sn is equal to -...The geometric mean of the numbers 4, 8, 16 is-...The mean of 50 observations is 36. If two observations 30 and 42 are deleted, then the mean of the remaining observation...If ln (a + c), ln (c - a) , ln (a - 2b + c) are in A.P. then:...If 0 < x, y, a,b < 1, then the sum of the infinite terms of the series + √x (√a + √x) + √x...