the sum of first 20 term in AP is 200, and the sum of next 10 is 400, find 14th term

Question

goformit100 · Answer

Warm Welcome To Open Study ......... Sir/ Ma'am @Beaconhousestudent405060

mathmale · Answer

Need more information.  What is "AP?"  Type it out here, please.

Have you here an aritihmetic or a geometric sequence?

anonymous · Answer

I think it mean arithmetic progression

anonymous · Answer

means*

mathmale · Answer

OK.  Let's assume that AP represents "arithmetic progression."

@Beaconhousestudent405060 :  Supposing you are given the first and last terms of an AP, and that you know the number of terms.  What is the formula (for AP's) for the SUM of the first n terms of such an AP?  Type it out here, please.

mathmale · Answer

If you don't know that formula, or if you're not sure, please do an Internet search for "sum of an arithmetic progression."