wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

The 17th term of an A.P. is 5 more than twice its 8th term. If the 11th term of the A.P. is 43 find the nth term.

Open in App
Solution

a17=2a8+5a+16d=2(a+7d)+5a+16d=2a+14d)+5a+2d=5(i) a11=43a+10d=43(ii)

Adding (i) and (ii).
a+2d=5
a+10d=43
12d=48=4a=3

an=a+(n1)d
an=3+(n1)4
an=4n1

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Arithmetic Progression
MATHEMATICS
Watch in App
Join BYJU'S Learning Program
CrossIcon