Question

Check whether -256is term of GP.-4,-8,-16,....

Answer 1

Step-by-step explanation:

$\huge\bf{\mid{\overline{\underline{Answer:-}}\mid}}$

-4 , -8 , -16 is following G. P

$r = \frac{-8}{-4} = 2 \\ \\ t_n = a \times {r}^{n-1} \\ \\ -256 = -4 \times {2}{n-1} \\ \\ 64 = {2}^{n-1} \\ \\ 128 = {2}^{n} \\ \\ \huge{\boxed{\bold{n = 7}}}$