CameraIcon

SearchIcon

MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Sum of 'n' Terms of an Arithmetic Progression

Question 7 Fi...

Question

Question 7
Find the sum of first 22 terms of an AP in which d = 7 and $22^{n d}$ term is 149.

Open in App

Solution

$d = 7 a_{22} = 149 S_{22} = ? a_{n} = a + (n - 1) d a_{22} = a + (22 - 1) d 149 = a + 21 \times 7 149 = a + 147 a = 2 S_{n} = \frac{n}{2} (a + a_{n}) = \frac{22}{2} (2 + 149) = 11 \times 151 = 1661$

Suggest Corrections

thumbs-up

171

Similar questions

Q. Question 7
Find the sum of first 22 terms of an AP in which d = 7 and

22^{n d}

Q. Find the sum of first

22

terms of an AP in which

d = 7

22 n d

149

Find the sum of first 22 terms of an AP in which d = 7 and the 22 $^{n d}$ term is 149.

Q. The first term of an AP is

- 7

and the common difference

5

18^{t h}

term and general term.
OR
Find the sum of first

22

terms of an AP in which

d = 7

22^{n d}

149

Q. Find the sum of first

22

terms of an A.P. where

d = 7

22^{n d}

149

View More

Join BYJU'S Learning Program

explore_more_icon

Explore more

Sum of 'n' Terms of an Arithmetic Progression

Standard X Mathematics

Join BYJU'S Learning Program

CrossIcon