Progressions – Aptitude MCQ Questions – 08 Posted on July 9, 2020July 9, 2020 by admin Question 1If the sum of it terms of an A.P. is 2n2 + 5n, then its nth term is A. 4n - 3 B. 3n - 4 C. 4n + 3 D. 3n + 4 Question 2If 7th and 13th terms of an A.P. be 34 and 64 respectively, then its 18th term is A. 87 B. 88 C. 89 D. 90 Question 3The first three terms of an A.P. respectively are 3y – 1, 3y + 5 and 5y + 1. Then, y equals A. -3 B. 4 C. 5 D. 2 Question 4If Sn denotes the sum of the first r terms of an A.P. Then, S3n : (S2n – Sn) is A. n B. 3n C. 3 D. None of these Question 5In an AP, Sp = q, Sq = p and S denotes the sum of first r terms. Then, Sp+q is equal to A. 0 B. – (p + q) C. p + q D. pq Question 6If the sum of first n even natural number is equal to k times the sum of first n odd natural numbers, then k = A. 1/n B. n−1/n C. n+1/2n D. n+1/n Question 7If the first term of an A.P. is a and nth term is b, then its common difference is A. b−a/n+1 B. b−a/n−1 C. b−a/n D. b+a/n−1 Question 8 The common difference of the A.P. is 1/2q,1−2q/2q, 1−4q/2q, . . . . is A. -1 B. 1 C. q D. 2q Question 9 If 5+9+13+...tonterms/7+9+11+...to(n+1)terms =17/16, then n = ? A. 8 B. 7 C. 10 D. 11 Question 10 If 1/x+2, 1/x+3, 1/x+5 are in A.P. then x = ? A. 5 B. 3 C. 1 D. 2