Question

The 15 th term of the AP: 4,1-2,-5-8.......is

Answer 1

Answer:

is this expression in ap or not

Answer 2

ANSWER:-

Given:

The 15th term of the A.P.; 4,1,-2,-5,-8..is.

To find:

Find 15th term of an A.P.

Solution:

Here,

⏺️First term,(a)= 4

⏺️Common difference,(d)= -3

⏺️n= 15th term

Now,

Using the formula of the nth term,

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

${}^{a}15 = 4 + (15 - 1) \times ( - 3) \\ \\ = > 4 + (14)( - 3) \\ \\ = > 4 + ( - 42) \\ \\ = > 4 - 42 \\ \\ = > {}^{a} 10 = - 38$

Hence,

15th term of an A.P. is -38.

Hope it helps ☺️