in an ap fourth term and the 8th term are in the ratio 1: 2 if the 10th term is 30 find the AP
Share
in an ap fourth term and the 8th term are in the ratio 1: 2 if the 10th term is 30 find the AP
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Verified answer
AnswEr:
• 4th term & 8th term are in the ratio 1 : 2.
Now,
We Can Write
And,
If The tenth term is 30.
So,
a = 3 Therefore d = 3 [a = d]
Now, Finding AP
a, a + d, a + 2d, a + 3d, a + 4d.. so on
Substituting the Values of a & d.
3, 3 + 3, 3 + 2 × 3, 3 + 3 × 3, 3 + 4 × 3..
3, 6, 3 + 6, 3 + 9, 3 + 12..
3, 6, 9, 12, 15..