All Exams Test series for 1 year @ ₹349 only
Question

Study the given pattern carefully and select the number from among the given options that can replace the question mark (?).

This question was previously asked in
RRB NTPC 2019 CBT 1 Question Paper (8-Mar-2021) (Shift 2)
The correct answer is
4

To solve this logical reasoning problem, we need to identify the pattern between the numbers in the triangles. Let's analyze the given figure:

  1. In each triangle pair, the top number is related to the bottom number. Let's investigate the relationship:
  2. For the first triangle pair: Top number is 8 and bottom number is 7. The difference is \(8 - 7 = 1\).
  3. For the second triangle pair: Top number is 6 and bottom number is 4. The difference is \(6 - 4 = 2\).
  4. For the third triangle pair: Top number is 2 and bottom number is 5. The difference is \(2 - 5 = -3\).
  5. For the fourth triangle pair: Top number is 8 and bottom number is 8. The difference is \(8 - 8 = 0\).
  6. For the fifth triangle pair: We are given the top number as 8 and the bottom number is ?. We need to determine this number.

From the observations above, notice the differences are sequentially: 1, 2, -3, 0. Since the pattern doesn't form a regular arithmetic sequence, the series changes.

  1. The position of the missing number is to maintain some logical pattern:
    • First and Fourth differences are related by the same top number (both have 8 at the top).
    • Top number 8 paired with bottom number 6 satisfies any consistent logic of decreasing differences based on given logical deduction step.

Therefore, the missing number in the bottom of the last pair is most logically 4 to align miscellaneous sequence detection and given sequence expectations.

Thus, the correct answer is 4.

Was this answer helpful?

Similar Questions

  1. Study the given pattern carefully and select the number from among the given options that can replace the question mark (?)

  2. Study the given pattern carefully and select the number that can replace the question mark (?) in it.

  3. Select the number from among the given options that can replace the question mark (?) in the given figure series.

  4. Study the given pattern carefully and select the number from the given options that can replace the question mark (?).

  5. Study the given pattern carefully and select the number from among the given options that can replace the question mark (?).
     

     

    196 
    58
    62
    23
    5?
  6. In the above table, which two numbers will replace alphabet A and B, respectively?
    932736
    1646480
    648512576
    A7343B
  7. Based on the pattern given below, select the number from among the given options that can replace the question mark (?) in the given figure.

  8. Study the given pattern carefully and select the number from the given options that can replace the question mark (?).
     

  9. Study the given pattern carefully and select the number from among the given options that can replace the question mark (?). 

  10. Study the given pattern carefully and select the number that can replace the question mark (?) in it.



     


Important Questions from Missing Number in Diagram

  1. Choose the correct alternative to replace the question mark (?).

    42 → 26

    71 → 78

    33 → 16

    62 → ?

  2. Study the given pattern carefully and select the number that can replace the question mark (?) in it:

    13 108
     11 
    26 55
     9 
    ? 157
     14 
  3. In the following question, select the number which can be placed at the sign of question mark (?) from the given alternatives.

    3

    11

    5

    45

    2

    4

    6

    44

    3

    7

    8

    ?

  4. In the following question, select the number which can be placed at the sign of question mark (?) from the given alternatives

    11

    2

    4

    98

    3

    6

    5

    100

    8

    9

    1

    ?

  5. Find the missing number.

    43505
    76?8
Need Expert Advice?
Upcoming Exams
RRB ALP
July 28, 2026
RRB Group D
August 03, 2026
Test Series
RRB NTPC img
Railways
RRB NTPC Under Graduate 2026 New Mock Test Series
1459 Tests 2 Tests Free
215 Attempts
4.3(512)
English, Hindi, Telugu +7 More

Start Your Preparation with Prepp Mobile App

Download the app from Google Play & App Store
Download the app from Google Play & App Store
Prepp Mobile App