Verbal Reasoning - Series Completion - Discussion
Discussion Forum : Series Completion - Section 1 (Q.No. 43)
Directions to Solve
Choose the correct alternative that will continue the same pattern and replace the question mark in the given series.
43.
20, 20, 19, 16, 17, 13, 14, 11, ?, ?
Answer: Option
Explanation:
Let the missing terms of the series be x1 and x2.
Thus, the sequence 20, 20, 19, 16, 17, 13, 14, 11, xv x2 is a combination of two series :
I. 20, 19, 17, 14, x1 and II. 20, 16, 13, 11, x2
The pattern in I is - 1, - 2, - 3,......So, missing term, x1 = 14 - 4 = 10.
The pattern in II is - 4, - 3, - 2,......So, missing term, x2 = 11 - 1 = 10.
Discussion:
4 comments Page 1 of 1.
LP Adhikari said:
5 years ago
Break the series into two halves: 20, 20, 19, 16, 17 and 13, 14, 11, ?, ?.
Now, when you add the 1st and the last, 2nd and the second last, and so on, they add up to give 30.
So the last two nos. will be 10 and 10.
20 + 10 = 20 + 10 = 19 + 11 = 16 + 14 = 17 + 13 = 30.
Now, when you add the 1st and the last, 2nd and the second last, and so on, they add up to give 30.
So the last two nos. will be 10 and 10.
20 + 10 = 20 + 10 = 19 + 11 = 16 + 14 = 17 + 13 = 30.
Vinoth k said:
6 years ago
Split as 2series 20 19 17 14 x.
20 16 13 11 x.
1st series
20-1= 19,
19-2=17,
17-3=14.
So next 14-4=10.
Similarly 2nd series
20-4=16,
16-3=13 ,
13-2=11,
So next 11-1=10.
Ans:10, 10.
20 16 13 11 x.
1st series
20-1= 19,
19-2=17,
17-3=14.
So next 14-4=10.
Similarly 2nd series
20-4=16,
16-3=13 ,
13-2=11,
So next 11-1=10.
Ans:10, 10.
Simla said:
1 year ago
1series
20 - 1 = 19
19 - 2 = 17
17 - 3 = 14
14 - 4 = 10
Similar 2 series
20 - 4 = 16
16 - 3 = 13
13 - 2 = 11
11 - 1 = 10.
Ans-10, 10.
20 - 1 = 19
19 - 2 = 17
17 - 3 = 14
14 - 4 = 10
Similar 2 series
20 - 4 = 16
16 - 3 = 13
13 - 2 = 11
11 - 1 = 10.
Ans-10, 10.
Jancy said:
10 years ago
Explain clearly?
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