If the sum of first 7 terms of an AP is 49 and that of 17 terms is 289,find the sum of first nth terms
Answers
Answered by
1
hey....frnd...
here is ur solution....
hope it helps u
#APS☺
here is ur solution....
hope it helps u
#APS☺
Attachments:
santoshkushwaha1:
thanks parul yes it the correct answer
your welcome
sorry but pls press the button of thnks
Answered by
0
t7=49 , t17=289
a+6d=49
a+16d=289
now substrate
a+16d=289
a+6d=49
10d=240
d=240/10
d=24
putting anyone equation
a+6d=49
a+6×24=49
a+144=49
a=-95
1st term = -95 answer
a+6d=49
a+16d=289
now substrate
a+16d=289
a+6d=49
10d=240
d=240/10
d=24
putting anyone equation
a+6d=49
a+6×24=49
a+144=49
a=-95
1st term = -95 answer
no it is not correct answer
sry i can't see sum
Similar questions