Instructions

In questions a question is followed by data in the form of two statements labelled as I and II. You must decide whether the data given in the statements are sufficient to answer the questions. Using the data make an appropriate choice from (a) to (d) as per the following guidelines :

Question 17

What is the sum of the first 20 terms of the Anthmetic Progression ?
I. The sum of the first term and $$20^{th}$$ term of the AP is 120.
II. The common difference of the AP is 5.


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