Question

30th term of an AP:-3, 1/2, 2......, is? ​

Answer 1

Answer:

Dear user❤

Here is the ans

an=a+(n-1)d

n=11

a=-3

d=5/2

hence 11th term =-3+(11-1)*5/2

=22

Answer 2

ANSWER:-

Given:

30th term of of an AP: 3,1/2, 2......is?

Solution:

Here,

⏺️First term,(a)= 3

⏺️common difference= 1/2-3= -5/2

⏺️n= 30

Therefore,

We know that, Arithmetic progression,(AP);

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

$= > {}^{a} 30 = 3 + (30 - 1) \times (- \frac{5}{2} ) \\ \\ = > 3 + 29 \times (- \frac{5}{2} ) \\ \\ = > 3 + ( - \frac{145}{2} ) \ \\ \\ \ = > 3 - \frac{145}{2} \\ \\ = > \frac{6 - 145}{2} \\ \\ = > - \frac{139}{2}$

Hope it helps ☺️