Verbal Reasoning - Series Completion - Discussion

Discussion Forum : Series Completion - Section 1 (Q.No. 3)
Directions to Solve

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


3.
3, 10, 101,?
10101
10201
10202
11012
Answer: Option
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.

Discussion:
18 comments Page 1 of 2.

Gitanjali said:   3 years ago
(3)^2+1 = 9+1 = 10,
(10)^2+1 = 100+1 = 101,
(101)^2+1 = 10201+1 = 10202.
(13)

Samir Ku. Das said:   1 decade ago
Ans: C.

3 * 3 = 9 + 1 = 10.
10 * 10 = 100 + 1 = 101.
101 * 101 = 10201 + 1 = 10202.
(4)

Shubhasish said:   9 years ago
10 - 3 = 7, 10 + 3 = 13, 13 * 7 = 91.
91 + 10 = 101,
So, by this logic.

101 - 10 = 91, 101 + 10 = 111, 111 * 91 = 10101.
10101 + 101 = 10202.
(2)

Iffat said:   3 years ago
@All.

According to me, the difference between the 2 digits.

So, 10-3=7 and 101-10=91.

Now, the pattern I used was to multiply 7 with 3 and with 10. I got the answer 101. So, doing the same; I multiplied 91 by 10 and 101. I got 10101 from that method.

Now tell me, which one is correct?
(1)

Balabhadra said:   9 years ago
Answer is C. I agree.
(1)

Sushrut said:   10 years ago
Because it is the pattern.

As when 3 is multiplied by 3 it gives 9.

And when 9 is added by 1 it gives 10 and so on the series continues.
(1)

Uk(jk) said:   1 decade ago
Why they took square here? Any one please tell m?

Sai said:   9 years ago
The logic of this series is A.B/A+B.

Chitnaiah said:   10 years ago
Try it A+Bx(A*B/A+B).

Sushrut said:   10 years ago
Because that is the pattern.

i.e 3 when multiplied by 3 gives = 9.

And when 1 is added it gives 10 and so on.


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