SSC Selection Post 2026 Reasoning Most Important Questions with Answers

Preparing for the reasoning section can be challenging when you are unsure which question types to focus on. SSC Selection Post 2026 Reasoning Most Important Questions can help you practice important topics that are commonly included in reasoning preparation. 

These questions cover blood relations, series, coding-decoding, analogy, syllogism, mirror image, dice, and alphabetical reasoning. Regular practice of these question types can improve your understanding of different concepts, help you recognize question patterns, and build confidence while solving reasoning questions.

SSC Selection Post 2026 Reasoning Questions

The following SSC Selection Post 2026 Reasoning Questions cover important reasoning concepts such as blood relations, series, coding-decoding, syllogism, mirror image, dice, and alphabetical reasoning. Practice each question carefully and understand the logic used to arrive at the correct answer before moving to the next one.

Question 1: A + B means 'A is the brother of B'.

• A - B means 'A is the father of B'.

• A × B means 'A is the mother of B'.

• A ÷ B means 'A is the wife of B'.

Based on the above, if 'P × Q + R ÷ S - T', then how is P related to T?

Options:

(a) Sister

(b) Wife

(c) Mother

(d) Maternal grandmother

Solution:

Let's break down the expression 'P × Q + R ÷ S - T' from right to left (or step-by-step) to determine the relationships:

1. S - T: S is the father of T.

2. R ÷ S: R is the wife of S. Since S is the father of T, R must be the mother of T.

3. Q + R: Q is the brother of R. Since R is T's mother, Q is T's maternal uncle (mother's brother).

4. P × Q: P is the mother of Q. Since Q and R are siblings (brother and sister), P is the mother of both Q and R.

Since R is the mother of T, and P is the mother of R, P is the mother of T's mother.

Therefore, P is the maternal grandmother of T.

Correct Answer:

(d) Maternal grandmother

Question 2: Select the number from among the given options that can replace the question mark (?) in the following series.

543, 518, 495, 474, 455, ?

Options:

(a) 444

(b) 442

(c) 440

(d) 438

Solution:

Let's find the logic by looking at the differences between consecutive numbers in the series:

• 543 - 518 = 25

• 518 - 495 = 23

• 495 - 474 = 21

• 474 - 455 = 19

The difference between consecutive numbers is decreasing by 2 each time (25, 23, 21, 19). This represents a series of consecutive decreasing odd numbers.

Following this pattern, the next difference should be:

• 19 - 2 = 17

Now, subtract 17 from the last number in the series to find the missing value:

• 455 - 17 = 438

Correct Answer:

(d) 438

Question 3:  104 is related to 13 in a certain way. Following the same logic, 136 is related to 17. Following the same logic, 232 is related to which of the following?

Options:
(a) 29
(b) 31
(c) 33
(d) 27

Solution:
Observe the relationship between the given pairs:

• 104 ÷ 8 = 13

• 136 ÷ 8 = 17

So, the logic is that the related number is obtained by dividing the first number by 8.

Now apply the same logic to 232:

• 232 ÷ 8 = 29

Therefore, 232 is related to 29.

Correct Answer:
(a) 29

Question 4: Statements:

• Some bags are purses.

• All purses are wallets.

• All wallets are sacks.

Conclusions:

• (I) All purses are sacks.

• (II) Some wallets are bags.

Options:

(a) Both conclusions (I) and (II) follow.

(b) Only conclusion (II) follows.

(c) Neither conclusion (I) nor (II) follows.

(d) Only conclusion (I) follows.

Solution:

Let's evaluate the conclusions based on the given statements using Venn diagrams or logical deduction:

1. Conclusion (I): All purses are sacks.

• Statement 2 says "All purses are wallets".

• Statement 3 says "All wallets are sacks".

• Combining these two, since all purses are inside wallets, and all wallets are inside sacks, it naturally follows that all purses are inside sacks. Therefore, conclusion (I) is true.

2. Conclusion (II): Some wallets are bags.

• Statement 1 says "Some bags are purses".

• Statement 2 says "All purses are wallets".

• Since some portion of bags overlaps with purses, and the entirety of purses is contained within wallets, that overlapping portion of bags must also be inside wallets. Therefore, some wallets are definitely bags. Conclusion (II) is true.

Since both conclusions follow, the correct option is (a).

Correct Answer:

(a) Both conclusions (I) and (II) follow.

Q 5:  Statements:

• No bench is a chair.

• All sofas are benches.

• All tables are sofas.

Conclusions:

• I. No table is a chair.

• II. Some sofas are chairs.

• III. All tables are benches.

Options:

(a) Both conclusions (I) and (III) follow.

(b) Only conclusion (II) follows.

(c) Neither conclusion (I) nor (II) follows.

(d) Only conclusion (I) follows.

Solution:

Let's carefully evaluate each conclusion based on the given statements:

1. Conclusion I: No table is a chair.

• We know that "All tables are sofas" and "All sofas are benches". This means all tables are completely inside the bench category.

• Since "No bench is a chair", nothing inside the bench category can touch or cross over to the chair category.

• Therefore, no table can ever be a chair. Conclusion I is true.

2. Conclusion II: Some sofas are chairs.

• Since "All sofas are benches" and "No bench is a chair", sofas and chairs cannot have any overlap.

• Therefore, no sofas are chairs, making conclusion II false.

3. Conclusion III: All tables are benches.

• Statement 3 states "All tables are sofas" and Statement 2 states "All sofas are benches".

• Nesting these together logically shows that all tables are inside benches. Therefore, conclusion III is true.

Since both conclusions I and III follow, option (a) is the correct choice.

Correct Answer:

(a) Both conclusions (I) and (III) follow.

Question 6: In a certain code language, COWS is coded as 7935, and OILY is coded as 2568. What is the code for O in that language?

Options:
(a) 5
(b) 8
(c) 2
(d) 9

Solution:
Compare the two coded words:

• COWS → 7935

• OILY → 2568

The only common letter in both words is O.

The only common digit in both codes is 5.

Therefore, the code for O is 5.

Correct Answer:
(a) 5

Question 7: Three of the following number pairs are alike in a certain way and form a group. Which number pair does not belong to the group?

Options:
(a) 21 – 420
(b) 22 – 462
(c) 18 – 306
(d) 15 – 240

Solution:
Check the relationship between the two numbers in each pair.

• (a) 21 × 20 = 420 ✓

• (b) 22 × 21 = 462 ✓

• (c) 18 × 17 = 306 ✓

• (d) 15 × 14 = 210 ✗ (not 240)

The first three pairs follow the rule:

Second number = First number × (First number − 1)

Option (d) does not follow this pattern.

Correct Answer:
(d) 15 – 240

Question 8: Select the option that is related to the fifth letter cluster in the same way as the second letter cluster is related to the first letter cluster and the fourth letter cluster is related to the third letter cluster.

BACK : CCBI :: TEST : UGRR :: WORK : ?

Options:
(a) YQQJ
(b) XQSI
(c) YQPI
(d) XQQI

Solution:
Observe the pattern:

• BACK → CCBI

• B → C (+1)

• A → C (+2)

• C → B (−1)

• K → I (−2)

• TEST → UGRR

• T → U (+1)

• E → G (+2)

• S → R (−1)

• T → R (−2)

So, the pattern is:

+1, +2, −1, −2

Now apply the same pattern to WORK:

• W → X (+1)

• O → Q (+2)

• R → Q (−1)

• K → I (−2)

Therefore, the required letter cluster is XQQI.

Correct Answer:
(d) XQQI

Question 9: Select the set in which the numbers are related in the same way as the numbers in the following sets:

(25, 300, 6)
(19, 342, 9)

Options:
(a) (17, 476, 7)
(b) (24, 600, 5)
(c) (18, 288, 8)
(d) (14, 364, 7)

Solution:
Find the relationship among the three numbers in each given set.

For (25, 300, 6):

• 25 × 6 × 2 = 300

For (19, 342, 9):

• 19 × 9 × 2 = 342

So, the pattern is:

First Number × Third Number × 2 = Second Number

Now check the options:

• (a) 17 × 7 × 2 = 238 ≠ 476 ✗

• (b) 24 × 5 × 2 = 240 ≠ 600 ✗

• (c) 18 × 8 × 2 = 288 ✓

• (d) 14 × 7 × 2 = 196 ≠ 364 ✗

Therefore, the correct set is (18, 288, 8).

Correct Answer:
(c) (18, 288, 8)

Question 10: In a certain code language, TIZZ is written as VKBB and QOPH is written as SQRJ. How will CKAU be written in that language?

Options:
(a) EMCW
(b) DNBV
(c) ENCV
(d) DMBW

Solution:
Observe the pattern:

• TIZZ → VKBB

• T → V (+2)

• I → K (+2)

• Z → B (+2, after wrapping around)

• Z → B (+2, after wrapping around)

• QOPH → SQRJ

• Q → S (+2)

• O → Q (+2)

• P → R (+2)

• H → J (+2)

The rule is to shift each letter 2 positions forward in the alphabet.

Now apply the same rule to CKAU:

• C → E

• K → M

• A → C

• U → W

So, CKAU → EMCW.

Correct Answer:
(a) EMCW

Tips to Practice SSC Selection Post 2026 Reasoning Most Important Questions

Regular practice can help you become familiar with different reasoning patterns and improve your problem-solving approach. While solving reasoning questions, try to understand the logic behind each answer instead of focusing only on the final answer.

• Solve questions topic by topic to strengthen your understanding of each reasoning concept.

• Attempt every question on your own before checking the solution.

• Look for patterns and logical relationships instead of guessing the answer.

• Revise topics such as blood relations, coding-decoding, series, and syllogism regularly to improve accuracy.

• Practice different question types consistently to become more confident in solving reasoning questions.