Math miscellaneousHard
Question
Let Tr be the rth term of an A.P. whose first term is a and common difference is d. If for some positive integers m, n, m ≠ n, Tm = 
and Tn = 
, then a - d equals
and Tn = , then a - d equalsOptions
A.0
B.1
C.
D.
Solution
Tm = 
= a + (m - 1)d .....(1)
and Tn =
= a + (n - 1)d .....(2)
from (1) and (2) we get a =
, d =
Hence a - d = 0
= a + (m - 1)d .....(1)and Tn =
= a + (n - 1)d .....(2) from (1) and (2) we get a =
, d = Hence a - d = 0
Create a free account to view solution
View Solution FreeMore Math miscellaneous Questions
If (1 - x + x2)n = a0 + a1x + a2x2 + ....... + a2nx2n, then a0 + a2 + a4 +........+ a2n is equal to:-...The value of expression is -...The value of b for which the equations x2 + bx + 1 = 0, x2 + x + b = 0 have one root in common is :-...The value of|1 - x2|dx is...Coefficient of x11 in the expansion of (1 + x2)4(1 + x3)7(1 + x4)12 is...