Directions to Solve
Choose the correct alternative that will continue the same pattern and replace the question mark in the given series.
1.
120, 99, 80, 63, 48, ?
A. 35 B. 38
C. 39 D. 40
Answer & Explanation
Answer: Option A
Explanation:
The pattern is – 21, – 19, – 17, – 15,…..
So, missing term = 48 – 13 = 35.
View Answer Workspace Report Discuss in Forum
2.
589654237, 89654237, 8965423, 965423, ?
A. 58965 B. 65423
C. 89654 D. 96542
Answer & Explanation
Answer: Option D
Explanation:
The digits are removed one by one from the beginning and the end in order alternately
so as to obtain the subsequent terms of the series.
View Answer Workspace Report Discuss in Forum
3.
3, 10, 101,?
A. 10101 B. 10201
C. 10202 D. 11012
Answer & Explanation
Answer: Option C
Explanation:
Each term in the series is obtained by adding 1 to the square of the preceding term.
So, missing term = (101)2 + 1 = 10202.
View Answer Workspace Report Discuss in Forum
4.
In the series 2, 6, 18, 54, …… what will be the 8th term ?
A. 4370 B. 4374
C. 7443 D. 7434
Answer & Explanation
Answer: Option B
Explanation:
Clearly, 2 x 3 = 6, 6 x 3 = 18, 18 x 3 = 54,…..
So, the series is a G.P. in which a = 2, r = 3.
Therefore 8th term = ar8-1 = ar7 = 2 x 37 = (2 x 2187) = 4374.
View Answer Workspace Report Discuss in Forum
5.
125,80,45,20,?
A. 5 B. 8
C. 10 D. 12
Answer & Explanation
Answer: Option A
Explanation:
The pattern is – 45, – 35, – 25, …..
So, missing term = 20 – 15 = 5.