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

Explanation

Statement 1 establishes that birds and fish share no common elements. Statement 2 indicates that the entire set of fish is contained within the set of dogs.

Conclusion 1 fails because "All fish are dogs" only implies that "Some dogs are fish", so "All dogs are fish" cannot be inferred.

Conclusion 2 fails because birds being separated from fish provides no definite relationship between birds and dogs; birds can lie inside, outside, or partially overlap with the set of dogs.

Explanation

Admiral is a commissioned officer rank in the Navy, whereas the other given titles are ranks in the Army.

Explanation

The series follows a pattern where the difference between the positional values of consecutive letters in the English alphabet increases by 1 each time:

A (1) + 2 = C (3) C (3) + 3 = F (6) F (6) + 4 = J (10) J (10) + 5 = O (15) O (15) + 6 = U (21)

Adding 6 to the position of O (15) gives 21, which corresponds to the letter U.

Explanation

A doctor provides professional care and services to a patient. In the same way, a teacher imparts education and knowledge to a student, making the student the primary recipient of the teacher's professional service.

Explanation

Evaluating the statements regarding height:

B is taller than A (B > A). D and E are shorter than A (A > D and A > E). C is shorter than B but taller than F (B > C > F).

Combining these orderings, B > A > D and B > A > E show that B is taller than A, D, and E. Since B > C > F, B is also taller than C and F. Thus, B is taller than all other five boys, making B the tallest.

Explanation

Arranging the given words alphabetically based on their dictionary order:

Bat (4) comes first as Ba precedes Bi, Bl, and Br. Bird (1) comes next as Bir-d comes before Bir-t. Birth (2) follows Bird. Blow (5) comes fourth as Bl comes before Br. Brow (3) comes last as Br comes after Bl.

This gives the order 4, 1, 2, 5, 3.

Explanation

When seven persons sit around a circular table facing away from the centre, moving to the right corresponds to moving in the clockwise direction.

Placing Suman at position 1, Amit sits second to her right at position 3. Since Niraj sits between Jaya and Amit, Niraj occupies position 4 and Jaya occupies position 5. To fulfill the condition that Kavi sits to the immediate right of Mohit, Mohit and Kavi must occupy consecutive clockwise positions 6 and 7 respectively. This leaves position 2, which is to the immediate right of Suman, occupied by Kirti.

Explanation

Puru is good in English and Hindi as given in the first condition, and is also good in Botany and English as specified in the last condition. Combining these details, Puru is proficient in English, Hindi, and Botany.

Explanation

A chisel is the primary tool used by a sculptor to create sculptures. Similarly, a sword is the primary weapon used by a warrior in combat. The relationship follows the pattern of a professional or persona and their primary instrument or weapon.

Explanation

This is a direct letter substitution code where each letter in the given words is directly mapped to a specific coded letter:

R → X, A → J, T → O, I → B, O → P, N → L, C → N, L → Q, F → Z, M → T

Applying these direct letter mappings to the word RATIONAL: R → X A → J T → O I → B O → P N → L A → J L → Q

Combining these mapped letters yields XJOBPLJQ.

Explanation

This analogy is based on the characteristic mode of locomotion of creatures. Flying is the primary mode of movement for a bird, just as creeping is the characteristic mode of movement for a snail.

Explanation

A wallet is a physical container used to store money, just as a pendrive is a portable storage device used to store digital data. The relationship established between the terms is between the container or device and the contents stored within it.

Explanation

From Statement 2, since all philosophers are mathematicians, it logically converts to "Some mathematicians are philosophers" (universal affirmative conversion: All A are B implies Some B are A). Thus, Conclusion 2 logically follows.

Conclusion 1 does not follow because the converse of a universal affirmative statement is not universally true; all teachers are philosophers implies only that some philosophers are teachers, not all.

Explanation

Milan Rath Express is not an official train series or service operated by Indian Railways, making it the odd one out.

Explanation

Comparing 'Principal live in School' (CLD) and 'Students go School' (CRB), the common word 'School' corresponds to the common code letter 'C'. Comparing 'Principal live in School' (CLD) and 'Teachers live in Community' (LAF), the common phrase 'live in' corresponds to the common code letter 'L'. Removing the code letters 'C' for 'School' and 'L' for 'live in' from 'CLD' leaves 'Principal' coded as 'D'.

Explanation

In a 6-person circular arrangement facing the centre, opposite positions are three seats apart.

Placing A at position 1: A faces C, placing C at position 4. B is between A and D, placing B at position 2 and D at position 3. D faces F, placing F at position 6 (opposite position 3). The remaining person, E, occupies position 5.

Arranged clockwise, the positions are A (1), B (2), D (3), C (4), E (5), and F (6). E is situated at position 5, directly between F and C.

Explanation

Degree refers to an academic qualification or title conferred upon the completion of a course of study, making it an educational outcome rather than a physical educational institution.

Explanation

The difference between consecutive terms increases by 1 at each step:

7 - 5 = +2 10 - 7 = +3 14 - 10 = +4

Following this pattern, the next addition to 14 is +5, which gives 14 + 5 = 19.

Explanation

National Defence Academy (NDA) is a joint services training academy for the Indian Armed Forces operating under the Ministry of Defence, whereas the other organizations are Central Armed Police Forces (CAPFs) functioning under the Ministry of Home Affairs.

Explanation

Silchar is a city located in the Cachar district of Assam and is not a state capital, unlike the other three locations which are state capitals of northeastern Indian states.

Explanation

The pattern for each component of the terms in the series is as follows:

First letter advances by increasing positions (+2, +3, +4, +5): B (+2) = D D (+3) = G G (+4) = K K (+5) = P

Middle number increases by consecutive perfect squares (+1², +2², +3², +4²): 2 + 1 = 3 3 + 4 = 7 7 + 9 = 16 16 + 16 = 32

Third letter advances by increasing positions (+3, +4, +5, +6): D (+3) = G G (+4) = K K (+5) = P P (+6) = V

Combining the results for the next term gives P32V.

Explanation

Combining the given relations gives D > E > A > B. Since C does not have the least weight, C must be heavier than at least one person. This leaves B at the bottom of the order, making B the lightest among all five friends.

Explanation

When a parent insists on a specific academic branch for their child, it relies on the implicit belief that this chosen field provides better prospects and outcomes for the child's future, making Assumption I implicit. Additionally, the statement explicitly establishes Preeti's desire to pursue engineering and uses the conjunction "but" to highlight the conflict with her father's choice, which implies her reluctance or lack of interest in studying medical-related subjects, making Assumption II implicit as well. Therefore, both assumptions logically underlie the given statement.

Explanation

From the first statement, all doctors are a subset of players. The second statement indicates an overlap between players and teachers, but this overlap may lie entirely outside the doctor group, so it cannot be definitely concluded that some players are doctors as well as teachers. Furthermore, the statement that some players are teachers only converts directly to some teachers being players, which does not guarantee that all teachers are players. Therefore, neither conclusion logically follows from the given statements.

Explanation

Air is a homogeneous mixture composed of multiple gases, such as nitrogen, oxygen, argon, carbon dioxide, and trace components, along with varying amounts of water vapor. Unlike pure elements or chemical compounds, air does not possess a fixed chemical formula or constant composition.

Explanation

In an English alphabetical series, moving to the right of a position measured from the left corresponds to adding the two positions together.

Target position from left = 9 + 10 = 19th letter

Counting sequentially from A as the 1st letter, the 19th letter of the alphabet is S.

Explanation

Principal denotes an administrative head or chief executive officer of an educational institution, representing an official position of institutional authority and governance rather than a role centered on providing personal instruction, advice, or direction to individuals.

Explanation

Shina's father is Yagami, which makes Shina's paternal grandmother Mikasa the mother of Yagami and Light. Since Mikasa has only two children (Yagami and Light) and Yagami has no sons, Mikasa's grandson Oshio cannot be Yagami's son. Therefore, Oshio is Light's son, making Light his father.

Explanation

Toothpaste is a cleaning agent specifically used to wash and maintain the cleanliness of teeth. Similarly, shampoo is a cleaning agent specifically formulated to wash and clean hair.

Explanation

In OMLK, the positional values of the letters in the English alphabet are 15, 13, 12, and 11. The sequence fails to maintain a uniform consecutive reverse order because the letter N (position 14) is skipped between O and M.

Explanation

Comparing common letters and numbers in the given words:

Comparing TIM (547) and MAIL (4627), the common letters are I and M, which match the common digits 4 and 7. Thus, {I, M} corresponds to {4, 7}.

Comparing PAS (231) and MAIL (4627), the common letter is A, which matches the common digit 2. Thus, A = 2.

Combining these, the letter A is coded as 2, and letters I and M are coded using 7 and 4, giving 274 for AIM.

Explanation

From the given inequality chain X ≥ Y = P > Q ≤ R > Z:

X ≥ Y = P directly gives X ≥ P, which can be rewritten as P ≤ X. X ≥ Y = P > Q gives X > Q.

Combining P ≤ X and X > Q yields P ≤ X > Q.

Explanation

Sam's statement means that all projects submitted by Jonas are brilliant, which does not exclude the possibility of other people submitting brilliant projects. Nelly attempts to refute Sam by pointing out that Nanshu and Arnie also submitted brilliant projects. This response only makes sense as a contradiction if Nelly assumed Sam meant that only the projects submitted by Jonas are brilliant.

Explanation

The second statement explicitly establishes that all cats dance, meaning every single cat belongs to the group of entities that dance without exception. Consequently, any subset of cats, including those cats that do not cry, must also dance. Therefore, conclusion i logically follows from the given statements.

Explanation

Since Shyam is the son of both Ganesh and Rakhi, Ganesh and Rakhi are husband and wife. Their daughter Radha is therefore Ganesh's daughter. Since Radha is married to Ramesh, Ramesh is the husband of Ganesh's daughter.

Explanation

Comparing '124' ('She likes her') and '137' ('He detest her'), the common digit is 1 and the common word is 'her', so 'her' = 1.

Comparing '137' ('He detest her') and '175' ('her detest dress'), the common digits are 1 and 7 and the common words are 'her' and 'detest'. Since 'her' = 1, 'detest' = 7.

In '175' ('her detest dress'), with 'her' = 1 and 'detest' = 7, the remaining digit 5 corresponds to 'dress'.

Explanation

The given series follows a double-difference pattern with a constant second difference of 8:

105 - 68 = 37 150 - 105 = 45 203 - 150 = 53

The difference increases by 8 at each step: 37 + 8 = 45 45 + 8 = 53 53 + 8 = 61

Adding 61 to the last term yields 203 + 61 = 264.

Explanation

Statement 1 establishes that Surge is a health drink, meaning all Surge are health drinks. By standard conversion of universal affirmative propositions, if all Surge are health drinks, then it necessarily follows that some health drinks are Surge (Conclusion III). Statement 2 explicitly rules out any health drink from being a protein, which contradicts Conclusion I. Statement 3 connects proteins to medicines, but no relationship is established between medicines and Surge, making Conclusion II invalid.

Explanation

This is a direct substitution code where each letter corresponds to a specific digit based on the given words:

P = 7, A = 6, N = 8, T = 1, H = 2, E = 0, R = 3

Substituting these letter values for PANTHER: P → 7 A → 6 N → 8 T → 1 H → 2 E → 0 R → 3

Combining them gives 7681203.

Explanation

The six boxes are P, Q, R, S, T, and U, and the six colours are Black, Blue, Orange, Green, White, and Grey.

It is given that P is painted with Black and R is painted with Orange. The remaining available colours for the other four boxes are Blue, Green, White, and Grey.

Since S and U are neither painted with White nor Grey, they can only be assigned colours from the remaining choices of Blue and Green. Consequently, Box S must be painted with either Blue or Green.

Explanation

Comparing 'Bird is animal' (# mr so) and 'Parrot is Bird' (so # @), the common words 'is' and 'Bird' correspond to the common codes '#' and 'so'. Therefore, the remaining word 'animal' in the first statement corresponds to the remaining code 'mr'.

Explanation

Combining the given conditions establishes the strict ordering of marks from highest to lowest: From statement v: Arya > Mayank From statement i: Mayank > Sheetal From statement ii: Sheetal > Rohit From statement vi: Rohit > Praveen > Tanya

Joining these inequalities forms the complete order: Arya > Mayank > Sheetal > Rohit > Praveen > Tanya, placing Arya strictly at the top.

Explanation

In the given code language, the pattern is established by adding increasing multiples of 4 (0, 4, 8, 12, 16) to the alphabetical positions of the letters in 'VMBHL':

1st letter: V (22) + 0 = 22 → V 2nd letter: M (13) + 4 = 17 → Q 3rd letter: B (2) + 8 = 10 → J 4th letter: H (8) + 12 = 20 → T 5th letter: L (12) + 16 = 28 ≡ 2 → B

Applying the reverse opposite letter transformation and positional shifts to 'KTSPR':

1st letter: Opposite of K is P (16) + 12 = 28 ≡ 2 → B 2nd letter: Opposite of T is G (7) + 18 = 25 → Y 3rd letter: Opposite of S is H (8) + 19 = 27 ≡ 1 → A 4th letter: Opposite of P is K (11) + 16 = 27 ≡ 1 → A 5th letter: Opposite of R is I (9) + 8 = 17 → Q

This yields the coded word BYAAQ.

Explanation

Placing the symbols ×, +, -, and ÷ sequentially into the blanks gives the expression:

9 × 3 + 0 - 8 ÷ 2

Applying the order of operations (BODMAS):

Division: 8 ÷ 2 = 4 Multiplication: 9 × 3 = 27 Addition and Subtraction: 27 + 0 - 4 = 23

Explanation

A manual is a structured guide or list detailing the operations, equipment, and procedures used in a laboratory. Similarly, a catalogue is a systematic list and directory of all the books, documents, and resources available in a library.

Explanation

A doctor is a medical professional who provides healthcare services and treats human illnesses, whereas the others are traditional artisans or craftsmen who work with raw materials to create and repair physical objects.

Explanation

The pattern follows the relation of x² : x³.

36 = 6² 216 = 6³

Similarly, 81 = 9² ? = 9³ = 729

Explanation

Assumption I is not implicit because suggesting a child can "do better" merely indicates scope for improvement, which applies to average or good students as well, not just those who are poor in studies. Assumption II is not implicit because the teacher mentions private tuition as "one of ways," clearly implying that alternative methods exist for the child to improve without taking private tuition.

Explanation

B is assigned White colour and Spice Jet airline.

A is not from Jet Lite, Go Air, Spice Jet, or Vistara, which means A must be from Emirates.

The remaining hostesses C and E belong to Go Air and Jet Lite. Since the hostess from Go Air likes Black colour and C does not like Black colour, C cannot be from Go Air. This means E is from Go Air and likes Black colour, while C is from Jet Lite.

D is from Vistara airline. D cannot like White (liked by B), Black (liked by E), or Pink and Blue (given in the problem). This leaves Green as the only remaining colour for D, confirming the definite combination D-Green-Vistara.

Explanation

The series follows a pattern where the set of letters x, y, and z repeat in increasing frequencies:

xyz | xxyyzz | xxxyyyzzz | xxx...

Placing the letters z, y, x, and z into the four blanks sequentially completes the sequence: 1st blank: z (completing xyz) 2nd blank: y (completing xxyyzz) 3rd blank: x (completing xxxyyyzzz) 4th blank: z (completing xxxyyyzzz)