Question

Which term of the AP: 27, 24, 21,
is zero?

Answer 1

Answer:

The 10th term of the AP 27, 4, 21, ...., is 0.

Step-by-step explanation:

a  =  27 ;  d  =  24  -  27  ;  $t_{n}$  =  0

                 =  -3

$t_{n} = a + (n - 1)d$

0  =  27  +  (n - 1)-3

-27  =  (n - 1)-3

∴ n - 1  =  $\frac{-27}{-3}$

   n - 1 = 9

∴ n  =  9  +  1

   n = 10  

Answer 2

an = a + (n - 1)d 0 = 27 + (n - 1)(-3) 30 = 3n n = 10 10thRead more on Sarthaks.com - https://www.sarthaks.com/970940/which-term-of-the-a-p-27-24-21-is-zero