the 4th and 7th term of an ap is 17 and23 respectively.find 15th term
Answers
Answered by
10
a4=17
a7=23
a+3d=17. (1)
a+6d=23. (2)
subtact 2 from 1
3d=6
d =2
a+3×2=17
a+6=17
=11
a15= 11+ 14×2
=11+28
=39
a7=23
a+3d=17. (1)
a+6d=23. (2)
subtact 2 from 1
3d=6
d =2
a+3×2=17
a+6=17
=11
a15= 11+ 14×2
=11+28
=39
Answered by
1
here is ur answer mate ✌✌✌
HOPE IT WILL HELP. .........
HOPE IT WILL HELP. .........
Attachments:
Similar questions