Question

For an A.P a = 6 & s10 = 195 then show that sn+3 : sn-8 = n(n-3) : (n-5) (n-8)

Answer 1

you can see in this ss moreover here's the link
https://www.nextgurukul.in/nganswers/ask-question/answer/-Show-that-SnSn3n3n3/Arithmetic-Progression/85649.htm