Progressions – Aptitude MCQ Questions – 04 Posted on July 9, 2020July 9, 2020 by admin Question 1(1) + (1 + 1) + (1 + 1 + 1) + ....... + (1 + 1 + 1 + ...... n - 1 times) = ...... A. n(n+1)/2 B. n(n−1)/2 C. n2 D. n Question 2If a + 1, 2a + 1, 4a - 1 are in A.P., then the value of a is: A. 1 B. 2 C. 3 D. 4 Question 3Which term of the A.P. 24, 21, 18, ............ is the first negative term? A. 8th B. 9th C. 10th D. 12th Question 4For A.P. T18 - T8 = ........ ? A. d B. 10d C. 26d D. 2d Question 5The sum of first five multiples of 3 is: A. 45 B. 65 C. 75 D. 90 Question 6In an A.P., if d = -4, n = 7, an = 4, then a is A. 6 B. 7 C. 20 D. 28 Question 7If an A.P. has a = 1, tn = 20 and sn = 399, then value of n is : A. 20 B. 32 C. 38 D. 40 Question 8Which term of the A.P. 92, 88, 84, 80, ...... is 0? A. 23 B. 32 C. 22 D. 24 Question 915th term of A.P., x - 7, x - 2, x + 3, ........ is A. x + 63 B. x + 73 C. x + 83 D. x + 53 Question 10For an A.P. if a25 - a20 = 45, then d equals to: A. 9 B. -9 C. 18 D. 23