Question

12th term of GP. 2, 4, 6, 8, ------- will be
Generalised term of expansion of (x+a)" is​

Answer 1

Answer:

10

Step-by-step explanation:

because there is two twobadded to no.

Answer 2

The 12th term of the GP 2, 4, 6, 8, .... is 4096

Step-by-step explanation:

The given GP is

$2, 4, 6, ,.....$

Here first term of GP is $a=2$

Common ratio $r=\frac{4}{2}=2$

We know that if first term of a GP is $a and common ratio$r[/tex]

Then the nth term is given by

$\boxed{a_n=ar^{n-1}}$

Therefore, 12th term of the GP will be

$a_{12}=2\times (2)^{12-1}$

$\implies a_{12}=2^{12}$

$\implies a_{12}=4096$

The generalised term ($r+1$ th term) in the expansion of $(x+a)^n$ is $^nC_rx^ra^{n-r}$

Hope this answer is helpful.

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