26.
If in an A.P., Tn represents nth term. If t
,t7 :t10 = 5:7 then t8 :t11, .....
(a) 13:16
(b)17:23
(c)14:17
(d)15:19
please answer with full explanation
Answers
Answered by
28
B is the answer....
....
Attachments:
Answered by
18
Answer:
n th term of Ap is A+(n-1)D
so A+6D /A+9D = 5/7
= 7A+42D= 5A+45D
=2A=3D
A=(3/2)D
so T8/T11=
A+7D/A+10D=
(3/2)D + 7D. /(3/2)D + 10D
=3D+ 14D /3D+20D
=17D/23D
17:23
may it will help you☺️☺️
Similar questions