UGC NET Questions (Paper – 1)

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U5 – Mathematical Reasoning and Aptitude
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Concepts: arithmetic progression common difference nth term sum of AP symmetry of terms UGC NET maths

Q: Which of the following statements about arithmetic progressions (APs) are correct?

(A) An arithmetic progression is a sequence in which the difference between consecutive terms is constant;
(B) The nth term of an AP with first term a and common difference d is a + (n − 1)d;
(C) The sum of the first n terms of an AP is Sₙ = n/2 [2a + (n − 1)d];
(D) In any AP, the average of the first and nth term equals the average of any pair of terms equidistant from the ends;
(E) If the common difference d = 0, the sequence is not an AP;
Choose the correct answer from the options given below:

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