An A. consists of 50 term of which 3rd term is 12 and last term is 106 . find the 29th term
Answers
Answered by
1
a=2
d=5
a50=106
a29=142
Attachments:
Answered by
1
A3=12
a+2d=12---(1)
a+50=106
a+49d=106-----(2)
subtracting 1 and 2
a+2d=12
a+49=106
(-). (-). (-)
--------------
-47d=-94
d=-94/-47
d=2
put d= 2 in eq (1)
a+2d =12
a+2(2)=12
a+4=12
a=12-4
a=8
a29=a+28d
a29= 8+28(2)
a29=8+56
a29=64
Similar questions