If the sum of the coefficients of all even powers of x in the product (1 + x + x2 + … + x2n) (1 – x + x2 – x3 + … + x2n) is 89, then find the value of n.
Let (1 + x + x2 + … + x2n) (1 – x + x2 – x3 + … + x2n) = a0 + a1 + a2 + a3+ …… Put x = 1 => 2n + 1 = a0 + a1 + a2 + a3 + …… …(i) Put x = -1 => 2n + 1 = a0 – a1 + a2 – a3 + …… …..(ii) Add (i) and (ii), we get 2n + 1 = 89 Or n = 44
How many persons are sitting between Q and X when counted to the left of Q?
If E is related to H and G is related to F in a certain way, then who among the following person is related to A?
Six persons S, T, U, V, W and X are sitting in a row facing north. X is not sitting beside U and U is sitting at the extreme right. Only S is sitting be...
How many persons sit between the one who sits to the immediate right of F and the one who sits to the immediate right of C?
If S is related to X and W is related to T in a certain way, then who among the following person is related to R?
Who sits third to the right of the person, who likes Coca cola in the row arrangement?
How many persons sit between P and R?
Six friends, P, Q, R, S, T and U, are sitting around a circular table, facing the centre of the table. P is second to right of S. Q is sitting to the im...
How many persons sit between G and the one who likes Bhopal?
How many persons face north direction?