Verbal Reasoning - Series Completion - Discussion

Discussion Forum : Series Completion - Section 1 (Q.No. 11)
Directions to Solve

Choose the correct alternative that will continue the same pattern and replace the question mark in the given series.


11.
3, 4, 7, 7, 13, 13, 21, 22, 31, 34, ?
42
43
51
52
Answer: Option
Explanation:

The given sequence is a combination of two series :

I. 3, 7, 13, 21, 31, ? and II. 4, 7, 13, 22, 34

The pattern in I is + 4, + 6, + 8, + 10,.....

The pattern in II is + 3, + 6, + 9, + 12,.....

So, missing term = 31 + 12 = 43.

Discussion:
27 comments Page 1 of 3.

Subash said:   2 years ago
3, 4, 7, 7, 13, 13, 21, 22, 31, 34, ?

1) 3, 7, 13, 21, 31
And 2) 4, 7, 22, 34.

The formula is (+4, +6, +8, +10. ).

Example:.

3+4= 7.
7+6= 13.
13 + 8=21.
21+10= 31.
31+ 12= 43.
The answer is = 43.
(6)

Suji said:   1 year ago
Because,the number which present here twice,there is no equal difference in the series.so we dividing the number series into two parts.

We need to find the missing number,so in that two pattern we are selecting the pattern 1.

3,7,13,21,31,?.

We are now finding difference 3-7, 7-13, 13-21, 21-31.

Finally we are getting even numbers while equalizing.

31-?=12
?=12+31.
?=43 = answer.
(3)

Royan said:   3 years ago
In this question, there are two mixed series but we have to pick up only one which starts from the first digit, third, sixth, ninth, Twelfth

Take the difference of Alternative numbers that is;
3 - 7 = +4,
7 - 13 = +6,
13 - 21 = +8,
21 - 31 = +10,
31 - ? = +12.

Therefore 31+12= 43.
(3)

Suren said:   4 years ago
Can't understand it. Anyone, help me to get this.
(3)

Yash said:   1 year ago
How to find that both are equal? Please explain.
(2)

Sonia said:   3 years ago
I can't understand this method, please anyone expxlain this in detail.
(2)

Tanzila said:   5 years ago
Can't understand this. Please explain in detail.
(2)

Kusuma said:   4 years ago
Didn't understand the solution, please, anyone, explain in other way.
(1)

Vinya said:   4 years ago
I am not understanding it. Please explain me.
(1)

Priyanka said:   5 years ago
Please explain me the answer clearly to get it.
(1)


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