IBPS RRB Clerk Prelims 2022 Reasoning Questions with Solutions

Explanation

The statement that only Bag is Clean means that all Clean are inside Bag and Clean cannot intersect with any set other than Bag, which means Clean can never be Dustbin. Furthermore, the statements that only a few Garbage are Dustbin and no Bag is Garbage do not establish any mandatory overlap between Dustbin and Bag. Therefore, neither conclusion logically follows.

Explanation

The statement that only a few Pen are Glue means some Pen are Glue and some Pen are not Glue, but it does not mandate that some Glue are not Pen. Additionally, because all Glue are Eraser and some Pen are Glue, it is already a definite fact that some Pen are Eraser, so presenting a definite fact as a possibility makes that conclusion logically invalid.

Explanation

Since Moderna is completely inside Pfizer, it is not required to overlap with SputnikV, so the first conclusion does not definitely follow. The statement that only a few SputnikV are Pfizer explicitly means that some SputnikV are Pfizer and some SputnikV are definitely not Pfizer, which validates the second conclusion.

Explanation

Number of students between two ranks from opposite ends = Total students - Rank from top - Rank from bottom. Substituting the given values gives 45 - 5 - 8 = 32.

Explanation

Counting letter distances both forward and backward in the word EXECUTIVE yields 5 valid pairs: E at position 3 and I at position 7 with 3 letters between them; T at position 6 and V at position 8 with 1 letter between them; T at position 6 and U at position 5 with 0 letters between them; U at position 5 and X at position 2 with 2 letters between them; and T at position 6 and X at position 2 with 3 letters between them.

Explanation

Based on the conditions, the vertical arrangement from floor 8 to floor 1 is A, F, D, B, E, C, H, G. A lives on floor 8, which is an even-numbered floor, whereas G lives on floor 1, B lives on floor 5, C lives on floor 3, and F lives on floor 7, all of which are odd-numbered floors.

Explanation

In the evaluated arrangement, D occupies floor 6 while H occupies floor 2. The floors between them are 5, 4, and 3, occupied by B, E, and C respectively, making a total of 3 persons, which is strictly more than two persons.

Explanation

Following the derived floor setup where floor 1 to floor 8 are occupied by G, H, C, E, B, D, F, and A in ascending order, H lives on floor 2. Floor 3, situated immediately above H, is inhabited by C.

Explanation

F lives on floor 7 and H lives on floor 2. The intermediate floors between them are floors 6, 5, 4, and 3, which are occupied by D, B, E, and C respectively, totaling four persons.

Explanation

A lives on floor 8 and B lives on floor 5, leaving 2 persons on floors 7 and 6 between them. Similarly, G lives on floor 1 and E lives on floor 4, leaving 2 persons on floors 2 and 3 between them.

Explanation

Arrange eight persons around the circle at positions 1 to 8 clockwise: A at 1 (inside), F at 2 (inside), D at 3 (outside), B at 4 (inside), H at 5 (inside), E at 6 (outside), C at 7 (outside), and G at 8 (outside). Since G is at position 8 and faces outside, his right direction is counter-clockwise along positions 7, 6, 5. Thus, second to the right of G is position 6, where E sits.

Explanation

Based on the arrangement, A sits at position 1 facing inside and E sits at position 6. Counting from the right of A (moving clockwise from position 1), the persons seated between A and E are F at position 2, D at position 3, B at position 4, and H at position 5. Since there are 4 persons between them, the count is more than three.

Explanation

C sits at position 7 facing outside. Moving clockwise (left of C) by 3 positions leads to F at position 2. F faces inside, so moving clockwise (right of F) by 2 positions leads to position 4, where B sits.

Explanation

D is seated at position 3 facing outside. For a person facing outside, moving clockwise represents the left direction. Moving 2 places clockwise from position 3 reaches position 5, where H sits. Therefore, H sits second to the left of D.

Explanation

In the circular arrangement, F is placed at position 2. The immediate neighbor on one side at position 1 is A, and the immediate neighbor on the other side at position 3 is D. Thus, both A and D are immediate neighbors of F.

Explanation

Comparing 'Privacy Social Media' (yo vo na) and 'Review culture Privacy' (yo ha ja), the common word in both statements is 'Privacy' and the common code is 'yo'.

Explanation

From the given statements, 'Privacy' is 'yo', leaving 'Review culture' as 'ha ja'. 'Law' is 'sa', leaving 'Biopic' as either 'ra' or 'ta'. Thus, 'Review culture biopic' can be coded as 'ja ha ta' or 'ha ja ra'.

Explanation

From 'Review culture Privacy' (yo ha ja) and knowing 'Privacy' is 'yo', the remaining words 'Review' and 'culture' correspond to 'ha' and 'ja'. Since neither word appears in any other statement, the exact code for 'review' cannot be uniquely determined.

Explanation

In 'Media law account' (la vo sa), comparing with other statements shows 'Media' is 'vo' and 'law' is 'sa'. The remaining word 'account' must be coded by the remaining code 'la'.

Explanation

Comparing 'Biopic law Security' (sa ra ta) and 'Media law account' (la vo sa), the common word present in both statements is 'law' and the common code is 'sa'.

Explanation

The original letter positions in REGARDING are 1-R, 2-E, 3-G, 4-A, 5-R, 6-D, 7-I, 8-N, 9-G. Sorting these letters alphabetically gives A, D, E, G, G, I, N, R, R. Comparing position by position shows that no letter remains in its original position.

Explanation

Applying the rule (+1 for digits less than 5, -1 for digits 5 or greater) to 763154921 transforms 7 to 6, 6 to 5, 3 to 4, 1 to 2, 5 to 4, 4 to 5, 9 to 8, 2 to 3, and 1 to 2. The resulting number is 654245832, where the digits 2, 4, and 5 each repeat.

Explanation

Ranking the wrestlers from heaviest (1) to lightest (6), B is 3rd because B is heavier than only three people. Y is 5th and W is 6th because Y is heavier than only W. With Z (101 kg) not being the heaviest and A being 89 kg, Z occupies 2nd position and A occupies 4th position. This leaves C as the heaviest wrestler in 1st position.

Explanation

The established weight sequence in decreasing order is C > Z (101 kg) > B > A (89 kg) > Y > W. The weight of B must be greater than 89 kg and less than 101 kg, which makes 95 kg the correct weight for B.

Explanation

Given that the heaviest wrestler C weighs 115 kg and Z weighs 101 kg, the difference in weight between C and Z is calculated as 115 kg - 101 kg = 14 kg.

Explanation

Assigning coordinates with T at (0, 0), point S is at (0, 6), point R is at (-10, 6), point U is at (-18, 6), and point V is at (-18, -6). From R(-10, 6) to V(-18, -6), the movement is 8m west and 12m south, placing V in the south-west direction from R.

Explanation

Setting T as the origin (0, 0), point S is at (0, 6), R at (-10, 6), U at (-18, 6), V at (-18, -6), W at (-11, -6), and X at (-11, -1). Since X is south and west relative to T(0, 0), point X lies in the south-west direction from T.

Explanation

Point R is located at (-10, 6) and point X is at (-11, -1). The shortest distance RX is calculated using the distance formula: √[(-11 - (-10))² + (-1 - 6)²] = √[(-1)² + (-7)²] = √(1 + 49) = √50 = 5√2 m.

Explanation

From P < R < S < T > U, the opposite inequality signs between R and U (R < S < T and T > U) make conclusion I (U < R) indeterminate. However, transitive property on P < R < S < T gives P < T, which directly confirms conclusion II (T > P).

Explanation

Combining the statements yields T > U ≥ V ≥ W = Y > Z. This inequality shows that U > Z, rendering conclusion I (Z > U) false. It also shows T > W, which is equivalent to W < T, rendering conclusion II true.

Explanation

Combining the given inequality statements K < L < M < N and M < O < P along the common element M gives K < L < M < O < P. From this combined chain, it directly follows that K < P, which is equivalent to P > K. Thus, conclusion I is definitely true. Regarding conclusion II, both N and O are greater than M, but there is no direct inequality relation established between N and O, making conclusion II not definitely true.

Explanation

From the statements B < A < C and A > D ≤ E, connecting B and E requires traversing B < A and A > D ≤ E. Since the inequality signs between B and E change direction (< and >), no definite relationship can be established between B and E. Similarly, connecting C and E requires traversing C > A and A > D ≤ E, where the inequality signs again change direction (> and ≤), so no definite relationship exists between C and E. Therefore, neither conclusion is definitely true.

Explanation

Arranging the eight dates in chronological order yields August 1, August 5, August 15, August 17, September 1, September 5, September 15, and September 17. Placing J on September 5 and counting three positions back gives P on August 5. Positioning M on September 17 satisfies having more than two persons between P and M. Counting two positions back from M places Q on September 1, and three positions back from Q places L on August 1. Placing K on August 15 satisfies the condition that K is not adjacent to Q and not on September 15. Finally, placing N on August 17 and O on September 15 satisfies two persons between N and O with N in August. Thus, P attends on 5th August.

Explanation

The complete date arrangement in chronological order is L on August 1, P on August 5, K on August 15, N on August 17, Q on September 1, J on September 5, O on September 15, and M on September 17. P attends on August 5 and O attends on September 15. The persons attending between these two dates are K, N, Q, and J, which equals four persons.

Explanation

Following the step-by-step arrangement of the eight meeting dates, J attends on September 5, P attends on August 5, M attends on September 17, and Q attends two positions before M, which corresponds to 1st September.

Explanation

In the chronological sequence of attendees (L, P, K, N, Q, J, O, M), L at position 1 is paired with K at position 3, and Q at position 5 is paired with O at position 7. Applying this same two-step forward relation to N at position 4 leads to J at position 6.

Explanation

By placing J on September 5, P on August 5, M on September 17, and Q on September 1, counting three persons before Q on September 1 places L on the very first date of the schedule, which is 1st August.

Explanation

The single-digit whole squares present in the series are 1, 4, and 9. Scanning the number series for an even number (2, 4, 6, 8) that is immediately preceded by 1, 4, or 9 identifies three such instances: 6 preceded by 9 at positions 8–9, 4 preceded by 4 at positions 15–16, and 4 preceded by 4 at positions 16–17.

Explanation

Dropping all odd numbers leaves only the even numbers in their original order. The combined relative position 5th to the right of the 7th from the left equals the (7 + 5) = 12th element from the left end. Extracting the sequence of even numbers from the original series yields 2, 4, 6, 8, 6, 2, 8, 4, 4, 4, 2, 8, 2, 2, 6, 8. Counting to the 12th element in this even-number sequence gives 8.

Explanation

In a series of 30 elements, the 4th to the left of the 15th from the right end corresponds to the (15 + 4) = 19th position from the right end. In terms of left-to-right indexing, this is the (30 - 19 + 1) = 12th position from the left end. The 12th digit in the original series is 5. Since only 1s are replaced by 2s and 4s are replaced by 5s, the digit 5 remains unchanged at 5.

Explanation

The 3rd number from the left end of the given series is 5, and the 4th number from the right end is 5. Sum = 5 + 5 = 10.

Explanation

The perfect squares other than 1 in the sequence are 4 and 9. Counting instances where 4 or 9 is immediately followed by an odd number yields: (4, 7), (4, 5), and (9, 7). Thus, there are 3 such odd numbers.

Explanation

Arranging the six persons in descending order of weight yields R (75 kg) > K > T (65 kg) > N > P > X (57 kg). Because P's weight cannot be an odd number, P cannot weigh 57 kg, which leaves X as the lightest person weighing 57 kg.

Explanation

Based on the weight hierarchy R (75 kg) > K > T (65 kg) > N > P > X (57 kg), K's weight must lie in the open interval between 65 kg and 75 kg. The value 66 kg falls within this valid range.

Explanation

When Deepika interchanges positions with Ranveer, she occupies Ranveer's original position, which is 18th from the left end. Since her new rank is 9th from the right end, the total number of persons in the row is 18 + 9 - 1 = 26.

Explanation

In Row 2 facing South, the arrangement from left to right on paper is Q, U, Z, T, S. In Row 1 facing North, the arrangement from left to right on paper is X, W, Y, R, V. U sits at the second position in Row 2, directly opposite W at the second position in Row 1.

Explanation

Q sits at position 1 in Row 2 facing South. For a person facing South, left corresponds to the eastward direction along the row, so the person sitting immediately to the left of Q is U at position 2.

Explanation

V sits at the extreme right end of Row 1, whereas T, W, Z, and R all sit at non-end interior positions in their respective rows.

Explanation

T sits at position 4 in Row 2 facing South. Facing South, left corresponds to higher position numbers, so only S at position 5 sits to the left of T, giving a total of 1 person.

Explanation

In Row 1 facing North, X sits at position 1 and V sits at position 5. The persons sitting between them are W, Y, and R at positions 2, 3, and 4, giving a total of 3 persons.