Progressions – Aptitude MCQ Questions – 08 Posted on July 9, 2020July 9, 2020 by admin Question 1The 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 2If 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 3If 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 4 If 1/x+2, 1/x+3, 1/x+5 are in A.P. then x = ? A. 5 B. 3 C. 1 D. 2 Question 5 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 6If 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 7 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 8If 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 9In 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 10If 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