SSC CHSL Tier 1 2025 General Intelligence & Reasoning Questions with Solutions

Explanation

Using the BODMAS rule, substitute the given operators into the expression:

8 @ 4 % 6 # 2

Replacing @ with -, % with +, and # with ×:

8 - 4 + 6 × 2

According to BODMAS, multiplication is performed first:

6 × 2 = 12

Now substitute this back into the expression:

8 - 4 + 12

Next, perform addition and subtraction from left to right:

8 - 4 + 12 = 4 + 12 = 16

Explanation

Addressing the root cause of an infrastructure issue is the primary objective of urban administration and public service management. Frequent power cuts directly disrupt daily life, reduce economic productivity, and compromise public safety. Prioritizing the improvement of the electricity supply directly resolves the core problem of power instability, ensuring consistent and reliable energy delivery to households, businesses, hospitals, and other essential services.

Explanation

The given statement explicitly highlights that online education improves access to learning, which represents a clear advantage. It also mentions concerns regarding screen time and quality, which represent disadvantages. This directly validates Conclusion I.

Furthermore, the statement notes that experts suggest regulation and monitoring to address these challenges, which directly implies that regulation is necessary to ensure online education is conducted effectively. This directly validates Conclusion II. Therefore, both Conclusions I and II logically follow from the statement.

Explanation

All four words begin with the prefix Cap. Comparing the subsequent letters of each word determines their alphabetical order in a dictionary.

The fourth letter of Capable and Capacity is a, while the fourth letter of Capital is i, and of Capture is t. Since a comes before i, and i comes before t, the words starting with Capa must be ordered first, followed by Capital, and finally Capture.

Comparing the fifth letters of Capable and Capacity, we have b in Capable and c in Capacity. Since b precedes c in the alphabet, Capable (4) comes before Capacity (3).

Next, Capital (2) naturally precedes Capture (1) because its fourth letter i comes before t.

Thus, arranging the words in alphabetical order yields Capable (4), Capacity (3), Capital (2), and Capture (1), which corresponds to the sequence 4, 3, 2, 1.

Explanation

The differences between consecutive terms in the series are: 11 - 3 = 8 27 - 11 = 16 51 - 27 = 24

These differences form an arithmetic progression where each term increases by 8. Following this pattern, the next difference is 24 + 8 = 32.

Adding this difference to the last term of the series gives: 51 + 32 = 83

Explanation

Comparing the words alphabetically, all four words begin with the prefix Tra. Comparing their fourth letters, Train has i, while Transfer, Translate, and Transport have n. Since i comes before n, Train (1) appears first.

Among the remaining words, all start with Trans. Comparing their sixth letters, f in Transfer (2) comes before l in Translate (3), which comes before p in Transport (4).

Arranging these alphabetically gives the order Train, Transfer, Translate, and Transport, which corresponds to the sequence 1, 2, 3, 4.

Explanation

The given series is 12, 23, 36, 51, ...

Let us find the difference between consecutive terms: 23 - 12 = 11 36 - 23 = 13 51 - 36 = 15

The differences between consecutive terms (11, 13, 15) form an arithmetic progression with a common difference of 2.

Following this pattern, the next difference must be: 15 + 2 = 17

Adding this difference to the last term gives the missing term: 51 + 17 = 68

Explanation

Handling customer complaints professionally is vital for maintaining business reputation, brand loyalty, and customer trust. Offering a replacement or a refund after verifying the claim ensures a fair resolution that respects the customer's grievance while preventing fraudulent claims. This balanced approach protects the business's financial interests and resolves the issue in accordance with standard consumer rights principles.

Explanation

The word MATURE contains the letter U, which is not present in the base word DEPARTMENT. Since the letter U is completely missing from the pool of available letters in DEPARTMENT, this word cannot be formed.

Explanation

The letters in the series follow a pattern based on their numerical positions in the English alphabet.

Converting the letters to their alphabetical positions: A is 1 D is 4 H is 8 M is 13

Calculating the differences between consecutive positions: 4 - 1 = 3 8 - 4 = 4 13 - 8 = 5

The differences increase by 1 at each step: 3, 4, 5. Following this pattern, the next difference must be 6.

Adding 6 to the position of M: 13 + 6 = 19

The 19th letter of the English alphabet is S.

Explanation

The coding pattern shifts each letter of the word forward by one position in alphabetical order (+1 shift).

Applying this pattern to BIOLOGICAL: B + 1 = C I + 1 = J O + 1 = P L + 1 = M O + 1 = P G + 1 = H I + 1 = J C + 1 = D A + 1 = B L + 1 = M This yields CJPMPHJDBM.

Applying the same +1 shift pattern to PSYCHOLOGICAL: P + 1 = Q S + 1 = T Y + 1 = Z C + 1 = D H + 1 = I O + 1 = P L + 1 = M O + 1 = P G + 1 = H I + 1 = J C + 1 = D A + 1 = B L + 1 = M

This gives the code QTZDIPMPHJDBM, which matches option B.

Explanation

In the English alphabet, each letter corresponds to a specific numerical position: W = 23, X = 24, U = 21, V = 22, S = 19, and T = 20.

Analyzing the relationship between the first pair, WX and UV, each letter shifts backward by two positions: W - 2 = U (23 - 2 = 21) X - 2 = V (24 - 2 = 22)

Applying the same pattern of subtracting 2 from the alphabetical positions of the letters in ST: S - 2 = Q (19 - 2 = 17) T - 2 = R (20 - 2 = 18)

This gives the letters QR.

Explanation

The total number of students in the line is 50. Rina is 20th from the left, which means there are 20 students from the left end up to and including Rina. Tina is 15th from the right, which means there are 15 students from the right end up to and including Tina.

To find the number of students sitting between Rina and Tina, we subtract the sum of their positions from the total number of students:

Students between = Total students - (Position of Rina from left + Position of Tina from right)

Substituting the given values:

Students between = 50 - (20 + 15) = 50 - 35 = 15

Explanation

The terms of the given series are the cubes of consecutive natural numbers starting from 1. The general term of the series can be expressed as n³ for n = 1, 2, 3, 4, ...

1³ = 1 2³ = 8 3³ = 27 4³ = 64

Following this pattern, the next term in the series for n = 5 is: 5³ = 125

Explanation

Argument I is strong because mobile phones are a major source of distraction in educational environments. Constant access to social media, messaging apps, and games during class hours can significantly disrupt a student's focus, leading to a decline in academic performance.

Argument II is also strong because mobile phones are vital communication tools during emergencies. In unforeseen circumstances such as health issues, accidents, or security crises, having a phone allows students to establish immediate contact with their parents, guardians, or emergency services, ensuring their safety and security.

Both arguments address critical and realistic aspects of the debate, presenting valid points concerning academic focus and safety.

Explanation

The coding pattern involves shifting each letter of the word forward by one position (+1) in the English alphabetical order.

Applying this rule to PHYSICS: P + 1 = Q H + 1 = I Y + 1 = Z S + 1 = T I + 1 = J C + 1 = D S + 1 = T

Applying the same +1 shift to CHEMISTRY: C + 1 = D H + 1 = I E + 1 = F M + 1 = N I + 1 = J S + 1 = T T + 1 = U R + 1 = S Y + 1 = Z

This yields the coded word DIFNJTUSZ.

Explanation

The series follows a pattern where each term is obtained by subtracting 4 from the alphabetical position of the previous letter.

Z is the 26th letter. V is the 22nd letter (26 - 4). R is the 18th letter (22 - 4). N is the 14th letter (18 - 4).

Following this sequence, the next position is 14 - 4 = 10. The 10th letter of the alphabet is J.

Explanation

Immediate repair of the damaged roads is a logical and constructive course of action because it directly addresses the problem, restores safe driving conditions, and prevents further degradation of the transport infrastructure. This ensures the safety of commuters and minimizes disruption to daily transportation, making it the most practical and necessary response to road damage.

Explanation

The position of an object from the opposite end in a row can be determined using the formula:

Position from right = Total number of objects - Position from left + 1

Given that the total number of books is 30 and the position of the book from the left is 11:

Position from right = 30 - 11 + 1 = 20

The 11th book from the left is the 20th book when counted from the right.

Explanation

The series is formed by consecutive pairs of letters in alphabetical order, where the second letter of each term becomes the first letter of the subsequent term.

In the first term AB, the letters are A and B. In the second term BC, the sequence continues starting from B. In the third term CD, the sequence continues starting from C. Following this systematic pattern, the next term must start with the letter D and be followed by the next consecutive letter in the alphabet, which is E. This yields the term DE.

Explanation

In a professional workplace, encountering missing data close to a deadline is a challenge that must be addressed with transparency and efficiency. Informing the supervisor immediately is the most responsible action because it manages expectations, seeks guidance, and potentially facilitates the acquisition of the necessary information. Simultaneously, focusing on and completing the portions of the project that do not depend on the missing data ensures that progress continues and time is utilized productively. This balanced approach demonstrates professionalism, problem-solving, and accountability.

Explanation

In a professional work environment, demonstrating empathy, teamwork, and collaborative problem-solving is essential. When a teammate is overwhelmed with workload, offering assistance and suggesting effective planning helps distribute tasks efficiently, reduces their stress, and ensures the timely and successful completion of the project. This supportive approach fosters a healthy and productive workplace culture.

Explanation

The standard pattern among the pairs is that the difference between the second number and the first number is exactly 7. In the pair 56 : 65, the difference between the two numbers is 9, which deviates from this common difference.

Explanation

According to the given operator substitutions, we replace the symbols in the expression 12 - 6 + 4 × 2 as follows: is replaced by +

• is replaced by × × is replaced by ÷

Substituting these symbols gives the new expression: 12 + 6 × 4 ÷ 2

Applying the BODMAS rule, we perform division first: 4 ÷ 2 = 2

The expression becomes: 12 + 6 × 2

Next, we perform the multiplication: 6 × 2 = 12

Finally, we perform the addition: 12 + 12 = 24

Explanation

The coding scheme follows a fixed positional addition pattern of +3, +3, +2, +3, +3, +2, +3 applied to each letter of the 7-letter word.

Applying this pattern to FREEDOM: F (6) + 3 = I (9) R (18) + 3 = U (21) E (5) + 2 = G (7) E (5) + 3 = H (8) D (4) + 3 = G (7) O (15) + 2 = Q (17) M (13) + 3 = P (16)

Applying the identical positional shifts (+3, +3, +2, +3, +3, +2, +3) to LIBERTY: L (12) + 3 = O (15) I (9) + 3 = L (12) B (2) + 2 = D (4) E (5) + 3 = H (8) R (18) + 3 = U (21) T (20) + 2 = V (22) Y (25) + 3 = B (2)

Explanation

The relationship between the numbers follows the formula f(n) = n × (n + 1).

Calculating each step of the sequence: For 4: 4 × 5 = 20 For 5: 5 × 6 = 30 For 6: 6 × 7 = 42

Applying this same mathematical rule to 7: 7 × 8 = 56

Explanation

In any retail or financial environment, standard operating procedures dictate that any unclaimed or extra money found must be handled with complete transparency and accountability. Informing the supervisor ensures that the incident is officially documented, the funds are securely held in accordance with company policy, and appropriate steps can be taken to reconcile the cash drawer or return the money to the rightful customer if they return.

Explanation

The symbols in the mathematical expression represent standard arithmetic operators where: @ means subtraction (-) § means addition (+)

• means multiplication (×)

Substituting these operators into the expression 8 @ 4 § 6 * 2: 8 - 4 + 6 × 2

Applying the BODMAS rule, perform the multiplication first: 8 - 4 + 12

Next, perform addition and subtraction from left to right: 4 + 12 = 16

Explanation

The difference between consecutive terms in the series follows the pattern of decreasing by successive multiples of 4, which are 4, 8, 12, 16, 20, and 24.

Calculating the terms using this pattern: 512 - 4 = 508 508 - 8 = 500 500 - 12 = 488 488 - 16 = 472 472 - 20 = 452 452 - 24 = 428

The term 473 violates this pattern, as the correct value should be 472.

Explanation

Each letter in the word is shifted forward by 5 positions in the English alphabetical order.

For the word WOLF: W is the 23rd letter: 23 + 5 = 28, which wraps around the 26-letter alphabet to the 2nd letter, B O is the 15th letter: 15 + 5 = 20, which is T L is the 12th letter: 12 + 5 = 17, which is Q F is the 6th letter: 6 + 5 = 11, which is K

Combining these gives BTQK.

Explanation

The word MANDATE contains the letter E, which is not present in the word ADMINISTRATION. Therefore, MANDATE cannot be formed using the letters of the given word.

Explanation

Providing communication training is a constructive managerial intervention that directly addresses the employee's specific skill gap while preserving their high work efficiency. This approach helps the employee improve their professional skills, enhances team collaboration, and retains valuable talent within the organization.

Explanation

To arrange the words in alphabetical (dictionary) order, compare them letter by letter from left to right. All five words begin with the common prefix All. Looking at the fourth letter of each word, Alleviate (5) has e, Alliance (2) and Alligator (4) have i, and Allocate (1) and Allowance (3) have o. Since e comes first alphabetically, Alleviate (5) is the first word in the sequence.

Next, compare the two words with i as their fourth letter: Alliance (2) and Alligator (4). Comparing their fifth letters, a in Alliance comes before g in Alligator, which places Alliance (2) before Alligator (4).

Finally, compare the two words with o as their fourth letter: Allocate (1) and Allowance (3). Comparing their fifth letters, c in Allocate comes before w in Allowance, which places Allocate (1) before Allowance (3).

Combining these determinations yields the correct alphabetical sequence: 5, 2, 4, 1, 3.

Explanation

The letters are paired based on their positions from the beginning and the end of the alphabet, written in alphabetical order.

The first pair consists of the first two letters from the start, A and B (positions 1 and 2), which map to the first two letters from the end, Y and Z (positions 25 and 26).

Similarly, the second pair consists of the next two letters from the start, C and D (positions 3 and 4). These map to the next two letters from the end, W and X (positions 23 and 24). Writing them in alphabetical order gives WX.

Explanation

The given series follows a pattern where each subsequent letter is obtained by adding 3 to the alphabetical position of the previous letter. The alphabetical positions of the letters are D = 4, G = 7, J = 10, and M = 13. Adding 3 to the position of M (13 + 3) gives 16, which corresponds to the letter P.

Explanation

The pair 11, 110 does not follow the pattern where the second number is the square of the first number. The square of 11 is 121 (11² = 121), whereas the given number in the pair is 110.

Explanation

An internship that offers practical exposure to data analysis and reporting directly aligns with the student's career objective in analytics. Gaining hands-on experience in her chosen field allows her to acquire industry-relevant skills, build a strong portfolio, and understand real-world application of analytical tools, which is highly beneficial for her professional growth and future employability in this domain.

Explanation

Educating employees on time management is a constructive and positive approach to addressing productivity issues in the workplace. It helps employees understand the importance of balancing their responsibilities, fosters self-discipline, and improves overall efficiency without creating a restrictive work environment. This proactive measure targets the root cause of the behavior, encouraging professional growth and mutual trust between the management and the workforce, making it a highly suitable and practical course of action to resolve the issue.

Explanation

Introducing a tracking system is the fairest solution because it allows the school to identify and hold accountable only those specific individuals who misuse the books, rather than penalizing the entire student body. By monitoring book check-outs, returns, and physical conditions, the school can maintain a transparent record of usage, protect educational resources, and ensure the library remains open and fully accessible to all well-behaved students.

Explanation

The number of students sitting between Rohan and Simran can be found using the direct formula for non-overlapping positions:

Students between = Total students - (Position from left + Position from right)

Given: Total students = 45 Rohan's position from the left = 12 Simran's position from the right = 20

Since the sum of their positions from the ends (12 + 20 = 32) is less than the total number of students (45), Rohan and Simran do not overlap.

Substituting these values into the formula:

Students between = 45 - (12 + 20) Students between = 45 - 32 Students between = 13

Explanation

In a diverse professional environment, mutual respect and effective communication are essential for maintaining a collaborative workplace. When a cultural misunderstanding occurs, addressing the situation immediately by clarifying the intended meaning and offering a sincere apology demonstrates professional empathy, emotional intelligence, and respect for the colleague's feelings. This proactive approach helps resolve tension, restores trust, and fosters an inclusive and psychologically safe team environment.

Explanation

To find the length of the remaining rope, subtract the length of the cut-off portion from the total length of the rope:

Remaining length = Total length - Cut-off length Remaining length = 12 m - 3.75 m = 8.25 m

Explanation

The given series consists of pairs of numbers where each coordinate follows a separate arithmetic progression.

For the first coordinate in each pair, the sequence is: 4, 6, 8, x, 12 This sequence has a common difference of 2. The fourth term is calculated as: 8 + 2 = 10

For the second coordinate in each pair, the sequence is: 6, 12, 18, y, 30 This sequence has a common difference of 6. The fourth term is calculated as: 18 + 6 = 24

Combining these terms gives the missing pair (10, 24).

Explanation

Substituting the operators as specified:

• is replaced by × is replaced by ÷ × is replaced by + ÷ is replaced by -

The given expression (10 + 2) × 5 - (9 ÷ 4) becomes: (10 × 2) + 5 ÷ (9 - 4)

Applying the BODMAS rule, solve the brackets first: 20 + 5 ÷ 5

Next, perform the division operation: 20 + 1

Finally, perform the addition: 21

Explanation

The relation between distance, speed, and time is given by the formula:

Distance = Speed × Time

First, convert the time from minutes to hours: Time = 40 minutes = 40/60 hours = 2/3 hours

Substitute the speed of 54 km/hr and the time of 2/3 hours into the formula: Distance = 54 × 2/3 = 18 × 2 = 36 km

This yields the exact distance covered by the train.

Explanation

Declining demand directly indicates that demand in the market has fallen, which validates Inference III. A fall in demand for a factory's products naturally leads to a decrease in its sales, validating Inference I. Therefore, both Inference I and Inference III logically follow from the given statement.

Explanation

To evaluate the expression (10 + 2) × 5 - (9 ÷ 4), we substitute the operators as defined by the rules:

• becomes × becomes ÷ × becomes + ÷ becomes -

Applying these substitutions, the expression is rewritten as: (10 × 2) + 5 ÷ (9 - 4)

Following the order of operations (BODMAS), we solve the operations inside the brackets first: 10 × 2 = 20 9 - 4 = 5

Substituting these values back into the expression gives: 20 + 5 ÷ 5

Next, we perform the division: 5 ÷ 5 = 1

Finally, we perform the addition: 20 + 1 = 21

Explanation

The word CONVERSATION contains 12 letters. Arranging these letters in alphabetical order gives: A, C, E, I, N, N, O, O, R, S, T, V.

To find the letter that is 5th to the right of the 6th letter from the left, we add the positions: 6 + 5 = 11th letter from the left.

Counting to the 11th position in the alphabetically arranged sequence yields the letter T.

Explanation

The given sequence follows a pattern where each term is multiplied by a consecutively increasing integer to obtain the next term.

The first term is 3.

3 × 4 = 12 12 × 5 = 60 60 × 6 = 360

Following this pattern, the next multiplier in the sequence is 7. Therefore, the next term is:

360 × 7 = 2520

Explanation

Comparing the first statement (apple mango orange -> ka, li, tu) and the second statement (orange grape banana -> tu, zo, pe), the common word is orange and the common code is tu. Therefore, orange is coded as tu.

Comparing the second statement (orange grape banana -> tu, zo, pe) and the third statement (apple banana lemon -> ka, pe, si), the common word is banana and the common code is pe. Therefore, banana is coded as pe.

In the second statement, the only remaining word is grape and the only remaining code is zo. Thus, grape is coded as zo.