Logical & Analytical Reasoning — Practice

Question 1

In a class of 60 students, Anjali ranks 25th from the bottom. Find her rank from the top.

Accepted Answer

Rank from top $=60-25+1=36$.

Answer: 36th from the top.

Question 2

In a row of students, Karan is 8th from the left and 12th from the right. How many students are in the row?

Accepted Answer

Total $=8+12-1=19$.

Answer: 19 students.

Question 3

P is Q's mother. Q is R's brother. R is S's daughter. S is P's husband. How is R related to P?

Accepted Answer

S is P's husband, so P and S are the parents. R is S's daughter, making R also P's daughter.

Answer: R is P's daughter.

Question 4

In a certain code, MOBILE is written as NPCJMF (each letter shifted forward by 1). How is TABLET written in the same code?

Accepted Answer

Applying the same +1 shift to each letter: T→U, A→B, B→C, L→M, E→F, T→U.

Answer: UBCMFU.

Question 5

Statements: All mangoes are fruits. All fruits are healthy foods. Conclusion: All mangoes are healthy foods.

Accepted Answer

Both statements are universal ('All'), and the middle term (fruits) connects them fully — every mango is a fruit, and every fruit is a healthy food, so every mango must be a healthy food.

Answer: The conclusion follows validly.

Question 6

Statements: Some doctors are teachers. Some teachers are singers. Conclusion: Some doctors are singers.

Accepted Answer

This is the 'Some A are B, Some B are C' pattern — the singer-teachers are not guaranteed to overlap with the doctor-teachers, since 'some' does not confirm the two overlapping subsets are the same teachers.

Answer: The conclusion does NOT necessarily follow.

Question 7

A person walks 6 km east, then 8 km north. Find the straight-line distance from the starting point.

Accepted Answer

The east and north legs are perpendicular, so the straight-line distance is $\sqrt{6^2+8^2}=\sqrt{36+64}=\sqrt{100}=10$ km.

Answer: 10 km.

Question 8

Among 6 people, M is taller than N, N is taller than O, P is taller than M, O is taller than Q, and Q is taller than R. Find the complete order from tallest to shortest.

Accepted Answer

Chaining every comparison: $P > M > N > O > Q > R$.

Answer: P, M, N, O, Q, R (tallest to shortest).

Question 9

If 26 January 2020 was a Sunday, what day of the week was 26 January 2023?

Accepted Answer

From 26 Jan 2020 to 26 Jan 2023 is 1,096 days (spanning the leap day of 2020). $1096 \bmod 7 = 4$, so the day shifts forward 4 places from Sunday: Monday, Tuesday, Wednesday, Thursday.

Answer: Thursday.

Question 10

If '×' means '+', '+' means '−', '−' means '÷', and '÷' means '×', evaluate: $12 	imes 3 - 6 \div 2 + 4$.

Accepted Answer

Substituting every symbol's new meaning: $12 + 3 \div 6 	imes 2 - 4$. Applying BODMAS: $3\div6=0.5$, then $0.5	imes2=1$, then $12+1-4=9$.

Answer: 9.

Question 11

6 friends sit around a circular table facing the centre. X sits immediately to the right of Y. Z sits immediately to the left of Y. W sits directly opposite X. Where does W sit relative to Y and Z?

Accepted Answer

Placing Y first: X is immediately right of Y, Z is immediately left of Y. W sits directly opposite X — since X is one seat clockwise from Y on a 6-seat table, W (opposite X) is three seats away from both Y and Z going around the table.

Answer: W sits directly opposite X, three seats from both Y and Z.

Practice — Logical & Analytical Reasoning

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