Question

The 11th term and 21st term of an A.P. are 16 and 29 respectively, then find the 41 st term of that A.P.

(Use the 1st formula for the solution)

•Solve in a book and click and post the pic
• Complete solution needed​

Answer 1

Answer:

may be my answer helps you

Step-by-step explanation:

a11

=16

a

21

=29

a

11

=a+10d=16

a

21

=a+20d=29

applytheelliminationmethod

a+10d=16

a+20d=29

changethesignyouwillgatethevalueofd=

10

13

putthevalueofdinequation(1)

a+10×

10

13

=16

a+13=16

a=16−13

a=3

a

41

=a+40d

a

41

=3+40×

10

13

=3+4×13

=3+52

a

41

=55

Hence

the41

th

termofApis55