RRB NTPC CBT 1 2021 General Intelligence & Reasoning Questions with Solutions

Explanation

Cinderella's mother is the mother-in-law of Charles. Since Isabella is the mother of Charles's mother-in-law, Isabella is the mother of Cinderella's mother. Jean is Cinderella's maternal aunt, which means Jean is the sister of Cinderella's mother. As Isabella is the mother of Cinderella's mother, she is also the mother of Jean.

Explanation

F reads book H. B does not read books G, J, L, I, or H (taken by F), which leaves book K as the only book B can read.

For A, books G, J, and L are ruled out. Book H is read by F and book K is read by B. Eliminating G, H, J, K, and L leaves book I as the only remaining book for A.

Explanation

An Equated Monthly Installment (EMI) is a specific type of periodic expenditure incurred by an individual. Similarly, a salary is a specific type of periodic income earned by an individual.

Explanation

The pattern follows three distinct rules for each component:

First letter decreases by increasing even numbers: A (27) - 2 = Y (25) Y (25) - 4 = U (21) U (21) - 6 = O (15) O (15) - 8 = G (7)

Middle number increases by consecutive multiples of 5: 3 + 5 = 8 8 + 10 = 18 18 + 15 = 33 33 + 20 = 53

Third letter increases by 4 in alphabetical position: A (1) + 4 = E (5) E (5) + 4 = I (9) I (9) + 4 = M (13) M (13) + 4 = Q (17)

Combining these results gives U18I.

Explanation

When a person apologizes for making a specific error, it inherently implies that avoiding that error matters. By expressing regret for misspelling the author's name on the book cover, the editor assumes that printing the correct name of the author on the cover is important and crucial.

Explanation

An egg is the primary raw material from which an omelette is prepared. Similarly, an ore is the naturally occurring raw material from which a metal is extracted. The analogy represents the relationship between a final or derived substance and its original raw source material.

Explanation

Each letter in a cluster advances by 6 positions in alphabetical order to form the corresponding letter in the next cluster:

First letter: O (15) + 6 = U (21) Second letter: Q (17) + 6 = W (23) Third letter: S (19) + 6 = Y (25)

This pattern continues throughout the series (U + 6 = A, W + 6 = C, Y + 6 = E). Additionally, within each cluster, the letters increase by 2 positions (U, W, Y).

Explanation

The statement "Every hospital has patients" implies that the presence of patients is a necessary feature of every hospital.

Conclusion I assumes that patients can exist only in hospitals. This is an invalid converse inference, as patients may also be present in other places such as clinics or homes.

Conclusion II directly contradicts the given statement, which clearly asserts that all hospitals have patients.

Explanation

An assumption is an unstated premise that the speaker takes for granted while making a statement. A marketing executive promotes a financial scheme promising to double money on the underlying assumption that people desire to invest their savings to increase their income and wealth. Advertisements and offers are specifically designed around the target audience's needs, so the executive assumes that offering high returns will successfully attract investors looking to grow their money.

Explanation

The code for each word is the sum of the alphabetical position values of its letters (A = 1, B = 2, ..., Z = 26).

AGE = 1 + 7 + 5 = 13 SEX = 19 + 5 + 24 = 48

Applying the same logic to COME: C (3) + O (15) + M (13) + E (5) = 36

Explanation

Scolding a student is a measure of discipline or corrective action and does not imply that the teacher dislikes the student. Additionally, the statement provides no information about the feelings or opinions of the classmates towards Amit. Therefore, neither conclusion logically follows from the given statement.

Explanation

The alphabetical positions of the letters in the series follow an increasing addition pattern:

A (1) + 1 = B (2) B (2) + 2 = D (4) D (4) + 3 = G (7) G (7) + 4 = K (11) K (11) + 5 = P (16)

Following this pattern, the next term is obtained by adding 6 to the position of P: 16 + 6 = 22

The 22nd letter in the English alphabet is V.

Explanation

A ring is an ornament worn around the finger. Following the same functional relationship, a bangle is an ornament worn around the wrist.

Explanation

By arranging the given conditions in order of scores: Mohan scored less than Pankaj but more than Narender: Pankaj > Mohan > Narender. Kamal scored less than Mohan but more than Narender: Mohan > Kamal > Narender.

Combining both relations gives the overall order from highest to lowest: Pankaj > Mohan > Kamal > Narender

Explanation

Tablet is an electronic gadget used for computing, whereas the other terms represent items of household furniture used for sitting or sleeping.

Explanation

Since R is the father of the girl S, and R is the brother of the man A, A is the brother of S's father. A brother of one's father is a paternal uncle, making A the paternal uncle of S. Correspondingly, as the daughter of A's brother, S is the niece of A. Therefore, the relationship between S and A is niece and paternal uncle.

Explanation

Placing the operators sequentially into the equation gives: 8 - 7 + 6 × 3

Applying the BODMAS rule for order of operations: First, perform multiplication: 6 × 3 = 18 Then, perform subtraction: 8 - 7 = 1 Finally, perform addition: 1 + 18 = 19

Explanation

Interchanging + with × and the numbers 4 with 6 in the given expression yields: 6 × 4 ÷ 3 - 3 + 2

Applying BODMAS rules for order of operations: First, perform multiplication and division from left to right: 6 × 4 ÷ 3 = 24 ÷ 3 = 8

Next, perform addition and subtraction from left to right: 8 - 3 + 2 = 7

Explanation

Statement 3 states "Some leathers are papers." By the rule of simple conversion for particular affirmative statements, "Some A are B" directly converts to "Some B are A." Therefore, "Some papers are leathers" logically follows. Additionally, since all given statements are affirmative, no negative conclusion can logically follow. Thus, only conclusion 3 follows.

Explanation

Kanchan is the mother of her only daughter Suman, and Hari is Kanchan's husband, which makes Hari and Kanchan the parents of Suman. Since Hari is the father-in-law of Ram, Ram is married to Suman. Sarita is the daughter of Suman, which means Sarita is also the daughter of Ram. Thus, the relationship between Sarita and Ram is daughter and father.

Explanation

Statement 2 asserts that there is an overlap between books and bags. Statement 1 establishes that bags and poems are completely mutually exclusive, meaning no bag can be a poem. Consequently, those books that are bags cannot be poems, which directly validates Conclusion 1 (Some books are not poems). Conclusion 2 directly contradicts Statement 1, as the statement rules out any overlap between poems and bags.

Explanation

Fruits are classified under the broader category of Food. Similarly, Tea belongs to the general category of Beverage, which includes any prepared liquid suitable for human consumption.

Explanation

The pattern in the series involves adding multiples of 49 by consecutive odd numbers (or maintaining a constant second difference of 98):

194 - 47 = 147 (49 × 3) 439 - 194 = 245 (49 × 5) 782 - 439 = 343 (49 × 7) 1223 - 782 = 441 (49 × 9) 1762 - 1223 = 539 (49 × 11)

Adding 245 to 194 gives 439.

Explanation

When a doctor advises against taking medicines during pregnancy, the advice is based on the underlying premise that such medications can cause complications or harm to the health of the mother or the developing fetus. Therefore, assumption 1 is directly implicit in the statement. The cost of medicines is completely unrelated to medical precautions regarding health risks during pregnancy, making assumption 2 non-implicit.

Explanation

Using the given relations: B + A = 40 B - A = 8

Adding these two equations gives: 2B = 48 ⇒ B = 24 A = 24 - 8 = 16

Since B ate 5 mangoes more than C: C = B - 5 = 24 - 5 = 19

Since C and E together ate 37 mangoes: E = 37 - C = 37 - 19 = 18

This confirms that E ate 18 mangoes and C ate 19 mangoes.

Explanation

A carpenter is a professional human worker who crafts, installs, and repairs wooden objects and building components, whereas a window, wall, and door are all inanimate structural parts of a house or building.

Explanation

The code language uses direct positional letter-to-digit substitution:

From MAY (123), A = 2. From RULE (4567), L = 6. From FUND (8590), N = 9 and D = 0.

Substituting the corresponding digits for the letters in LAND: L = 6 A = 2 N = 9 D = 0

Combining these in order gives 6290.

Explanation

A bangle is an ornament worn around the wrist or arm, whereas the other three items are accessories worn on the head or hair.

Explanation

A Labrador is a specific type or breed of dog. Similarly, Jazz is a specific genre or type of music. Both pairs follow a relationship where the first term is a specific category or variety of the broader concept represented by the second term.

Explanation

The pattern follows the rule where each term is multiplied by 2 and added to 3: 5 × 2 + 3 = 13 13 × 2 + 3 = 29 29 × 2 + 3 = 61

Alternatively, the difference between consecutive terms doubles at each step (+8, +16, +32), giving 29 + 32 = 61.

Explanation

Combining the given strength relationships into an inequality chain:

Sujeet > Zeeshan = Akhil > Rohan > Mathew/Subhash > Paul

Sujeet sits at the top of the chain as he is stronger than Zeeshan and Akhil, who are both stronger than Rohan and all remaining boys.

Explanation

The pattern followed in the pairs is that the second number is the square of the first number (n : n²). Since 23² = 529, the pair 23:539 violates this pattern as 539 is provided instead of 529.

Explanation

By direct substitution of letters with their corresponding digits from the given words: From GOAL = 3671: G = 3, O = 6, A = 7, L = 1 From HUNT = 4985: H = 4, U = 9, N = 8, T = 5

Substituting the digits for the letters in HANG gives: H = 4 A = 7 N = 8 G = 3

This yields the code 4783.

Explanation

Comparing 'Ram work there' (huge tyo tre) and 'Ram study here' (huge dow try), the common word 'Ram' corresponds to 'huge'.

Comparing 'Ram work there' (huge tyo tre) and 'Sima study there' (noe dow tre), the common word 'there' corresponds to 'tre'.

With 'Ram' as 'huge' and 'there' as 'tre', the remaining word 'work' in 'Ram work there' corresponds to 'tyo'.

Comparing 'Sima study there' (noe dow tre) and 'Ram study here' (huge dow try), the common word 'study' corresponds to 'dow'.

In 'Sima study there', with 'study' as 'dow' and 'there' as 'tre', the remaining word 'Sima' corresponds to 'noe'.

Thus, 'Ram there' is coded as 'huge tre', and 'Sima work' is coded as 'noe tyo'.

Explanation

Let x be the number of students who speak exactly one language. The sum of individual language counts equals the total language instances spoken across all students:

Sum of set cardinalities = (1 × students speaking 1 language) + (2 × students speaking 2 languages) + (3 × students speaking 3 languages)

6 + 15 + 6 = 1(x) + 2(2) + 3(1) 27 = x + 4 + 3 27 = x + 7 x = 20

Total students in the class = (students speaking 1 language) + (students speaking 2 languages) + (students speaking 3 languages) = 20 + 2 + 1 = 23.

Explanation

An astronaut is a professional whose workplace is space. Following the same relationship of professional to workplace, a scientist is a professional whose workplace is a laboratory.

Explanation

In each of the given numbers except 2015, the product of the first digit and the last digit forms the middle two digits:

3 × 4 = 12 (3124) 9 × 8 = 72 (9728) 6 × 5 = 30 (6305)

For 2015, the product of the first digit (2) and the last digit (5) is 10, whereas the middle two digits are 01.

Explanation

Combining statement (i) "All girls in my class are good dancers" and statement (ii) "All good dancers are acrobats" using the standard syllogism rule (All X are Y + All Y are Z ⇒ All X are Z) directly yields "All girls in my class are acrobats". Therefore, conclusion (iii) logically follows from the given premises.

Explanation

Argument (i) is strong because exposure to international media helps individuals learn about diverse global cultures, perspectives, and lifestyles, promoting cross-cultural awareness and learning. Argument (ii) is weak because commercial competition and impact on local movie viewership is an economic aspect and does not provide a sound justification for imposing a cultural ban.

Explanation

To meet the given criteria, a student ID must satisfy two conditions: Middle two digits (3rd and 4th) are even, indicating excellence in science quizzes/drama/writing. Last two digits (5th and 6th) are odd, indicating a below-average score on the annual IQ test.

Checking each of the 20 student IDs for an even middle pair and an odd ending pair yields the following 6 matching IDs: 360623 (Middle: 06, Last: 23) 090623 (Middle: 06, Last: 23) 260823 (Middle: 08, Last: 23) 420623 (Middle: 06, Last: 23) 600623 (Middle: 06, Last: 23) 120623 (Middle: 06, Last: 23)

Explanation

If all berries were fresh, the total weight of 10 berries (1 + 2 + 3 + 4) would be 10 × 5 = 50 g.

The actual measured weight is 44 g, giving a difference of 50 g - 44 g = 6 g.

Since each rotten berry is lighter by 5 g - 3 g = 2 g, the number of rotten berries taken is 6 ÷ 2 = 3.

Because 3 berries were drawn from Basket C, Basket C contains the rotten berries.

Explanation

The coding pattern used to convert FISH into GKVL adds increasing consecutive integers (+1, +2, +3, +4) to the alphabetical position of each letter: F (+1) = G, I (+2) = K, S (+3) = V, and H (+4) = L.

Applying the same progressive shift (+1, +2, +3, +4, +5, +6) to ORANGE gives: O (+1) = P R (+2) = T A (+3) = D N (+4) = R G (+5) = L E (+6) = K

This yields PTDRLK, which is defined as Code 4.

Explanation

The given triad (6, 42, 336) follows the mathematical pattern: Second number = First number × 7 = 6 × 7 = 42 Third number = Second number × 8 = 42 × 8 = 336

Applying the exact same rule: Second number = 4 × 7 = 28 Third number = 28 × 8 = 224

Explanation

The difference between consecutive terms increases by 5 at each step:

52 − 37 = 15 72 − 52 = 20 97 − 72 = 25 127 − 97 = 30

Following this pattern, the next difference is 30 + 5 = 35.

127 + 35 = 162

Explanation

An accident is an unforeseen event typically caused by human error, negligence, or mechanical failure, making it a man-made occurrence rather than a natural disaster.

Explanation

Each letter in the word is shifted back by 2 positions in the alphabetical order (-2 pattern):

F (-2) = D A (-2) = Y T (-2) = R H (-2) = F E (-2) = C R (-2) = P

Applying the same rule to FAMILY:

F (-2) = D A (-2) = Y M (-2) = K I (-2) = G L (-2) = J Y (-2) = W

Explanation

By replacing the blanks with the letters 'c', 'e', 'h', and 'h' sequentially, the series completes as: bbcc / dccd / ddedde / eeeeff / gffggh / gghh

This forms a clear pattern of repeating letter groups with symmetric and progressive structures (length 4, 4, 6, 6, 6, 4).

Explanation

Let Ruchi's residence be at the origin (0, 0) on a coordinate plane where East is along the positive x-axis and North is along the positive y-axis.

Calculating the net displacement step-by-step: 30 m East gives position (30, 0). Turning left (North) and covering 40 m gives position (30, 40). Turning right (East) and covering 30 m gives position (30 + 30, 40) = (60, 40). Turning right (South) and covering 20 m gives position (60, 40 - 20) = (60, 20). Turning left (East) and covering 20 m gives position (60 + 20, 20) = (80, 20). Turning right (South) and covering 20 m gives position (80, 20 - 20) = (80, 0).

Net East displacement = 30 + 30 + 20 = 80 m. Net North displacement = 40 - 20 - 20 = 0 m.

Explanation

A horn is a distinctive, hard physical projection growing from the head of a rhinoceros used for defense and signaling. Similarly, a tusk is a prominent, hard external projection extending from the mouth of an elephant. Both pairs represent an animal and its characteristic hard physical projection.

Explanation

Break down the statement step by step:

Radha's maternal grandmother's only son-in-law is married to Radha's mother, making him Radha's father. The statement states that this person is Sujeeta's father. Since Radha's father is also Sujeeta's father, Sujeeta and Radha are daughters of the same parents, which makes Sujeeta the sister of Radha.