UP SI Reasoning 2026 Practice Set 6: Complete Revision with Questions

UPSI Reasoning 2026 Practice Set 6 is a comprehensive revision session designed to sharpen logical thinking and problem-solving skills for the upcoming exam. This practice set focuses on important reasoning topics such as number series, coding-decoding, direction and distance, blood relations, ranking, and analytical puzzles. With carefully selected questions and clear solution approaches, it helps aspirants improve accuracy, speed, and conceptual clarity. Regular practice through this set will strengthen fundamentals and boost confidence for UPSI 2026.

UPSI Reasoning 2026 Practice Set 6

Below is the UPSI Reasoning 2026 Practice Set 6, specially designed for complete revision and concept strengthening. This set includes important and exam-oriented questions from key reasoning topics such as number series, coding-decoding, blood relations, direction and distance, ranking, and analytical puzzles. Practice these questions carefully to improve speed, accuracy, and logical approach for the UPSI 2026 examination.

Classification (Odd One Out)

To identify the odd one out from a list, examine the inherent meaning or category of each word. For example, consider the words: Enough, Sufficient, Blame, Adequate, Plenty.

• Enough, Sufficient, Adequate, and Plenty all denote a quantity or abundance.

• Blame refers to assigning responsibility for a fault.
  Therefore, Blame is the odd one out as it represents a different concept entirely.

Number Series (Difference of Differences)

To find the next number in a series like 8, 9, 12, 18, 28, ?, apply a multi-level difference method:

1. First-level difference: Calculate the difference between consecutive terms.

• 9 - 8 = 1

• 12 - 9 = 3

• 18 - 12 = 6

• 28 - 18 = 10

• New series: 1, 3, 6, 10

2. Second-level difference: Find differences in the new series.

• 3 - 1 = 2

• 6 - 3 = 3

• 10 - 6 = 4

• New series: 2, 3, 4

3. Third-level difference: Find differences again.

• 3 - 2 = 1

• 4 - 3 = 1

• The difference is constant (1).
  To find the next term in the original series, (work your way back up by adding the last number from each difference series):

• The next term in the third-level difference is 1.

• Add to the last term of the second-level difference: 4 + 1 = 5.

• Add this result to the last term of the first-level difference: 10 + 5 = 15.

• Finally, add this to the last term of the original series: 28 + 15 = 43.
  The next number in the series is 43.

Coding-Decoding (Opposite Letter Pairs)

This coding system replaces letters with their opposite letters in the alphabet. For instance, FULFIL would be coded using opposite pairs. To decode LABELLED, we need the corresponding opposite letters.

(Memory Tip: The 26-letter alphabet can be divided into two halves (A-M and N-Z). Opposite letters are equidistant from the ends of these halves, or can be remembered with mnemonics.)

Here are common mnemonic pairs:

• A ↔ Z: **Az**ad

• B ↔ Y: **By**e

• C ↔ X: C**ra**x

• D ↔ W: D**e**w

• E ↔ V: **Ev**ening

• F ↔ U: **F**u**f**a ji

• G ↔ T: G.T. Road

• H ↔ S: **H**igh **S**chool

• I ↔ R: **I**ndian **R**ailways

• J ↔ Q: **J**oker & **Q**ueen

• K ↔ P: **K**an**p**ur

• L ↔ O: **Lo**ve

• M ↔ N: M**a**n

Applying this to LABELLED:

• L → O

• A → Z

• B → Y

• E → V

• L → O

• L → O

• E → V

• D → W
  The code for LABELLED is OZYVOOVW.

Directions and Distance

Consider a person walking 20 km West, then turning South and walking 20 km, and finally turning East and walking 20 km. The question asks for the final distance from the starting point.

Analysis of the path:

1. The person moves 20 km West from the start.

2. Then 20 km South.

3. Finally, 20 km East. This eastward movement cancels out the initial westward movement, bringing the person directly below the starting point.
   The net displacement is only in the South direction. Therefore, the distance from the starting point is 20 km.

It is crucial to distinguish between two types of questions:

Always carefully read whether the question asks for the direction of travel or the direction of location.

Directions with Angular Turns

Suppose a person initially faces South, turns 100° clockwise, and then 55° anti-clockwise. To find their final direction, calculate the net rotation.

1. Clockwise (CW) turn = 100°

2. Anti-clockwise (ACW) turn = 55°

3. Net turn = 100° (CW) - 55° (ACW) = 45° CW.

4. Apply this net turn to the initial direction: A 45° clockwise turn from South leads to the South-West direction.
   The final direction is South-West.

Coded Blood Relations

Given the expression M + N – O * Q, with Q being male, and decoding rules:

• A + B means A is the father of B.

• A - B means A is the mother of B.

• A * B means A is the sister of B.
  We need to find the relationship of M to Q.

Step-by-step decoding:

1. M + N: M is the father of N.

2. N – O: N is the mother of O.

3. O * Q: O is the sister of Q.

Combining relationships:

Since O is the sister of Q, and N is the mother of O, N is also the mother of Q. As M is the father of N, M is the maternal grandfather of Q.

To determine who the answer is about, always focus on the person mentioned with 'of' or 'to' in the question ("What is the relation of M to Q?"). The question asks for M's relation to Q. The correct answer is Maternal Grandfather.

Word and Letter Arrangement

Consider the word REPRESENTATION.

Step 1: Replace Vowels

Replace every vowel with the next consonant. (Example: A->B, E->F, I->J, O->P, U->V).

Step 2: Alphabetical Arrangement

Arrange all letters of the newly formed word in alphabetical order.

Step 3: Find the Target Letter

The question asks for the letter that is second to the left of the sixth letter from the right end.

(Memory Tip: Use rules for combining positional directions):

• Right and Left → Add the positions and count from the Right.

• Left and Right → Add the positions and count from the Left.

• Right and Right → Subtract the positions and count from the Right.

• Left and Left → Subtract the positions and count from the Left.

In this case, "sixth from the right" and "second to the left" means: 6 (Right) + 2 (Left) = 8th position from the Right. After performing Step 1 and 2, identify the 8th letter from the right end of the alphabetically sorted string.

Logical Venn Diagrams (Computer Knowledge)

To determine the logical relationship between Toggle Key, Caps Lock, and Backspace using a Venn diagram:

• A Toggle Key switches between two functions (e.g., on/off).

• Caps Lock is a classic example of a toggle key, switching between uppercase and lowercase. Thus, Caps Lock is a type of Toggle Key.

• Backspace has a single function (deleting characters) and does not toggle.
  The Venn diagram would show the Caps Lock circle entirely inside the Toggle Key circle, with the Backspace circle completely separate.

Ranking and Order

Given:

• A is exactly in the middle of P and Q.

• P is 28th from the start of the row.

• Q is 20th from the end of the row.

• There are 2 people between P and A.

Solution:

1. Since A is in the exact middle of P and Q, and there are 2 people between P and A, there must also be 2 people between A and Q.

2. The total number of people between P and Q is: 2 (P to A) + 1 (A itself) + 2 (A to Q) = 5 people.

3. Total people in the row = (Position of P from start) + (People between P and Q) + (Position of Q from end).
   Total = 28 + 5 + 20 = 53.
   There are 53 people in the row.

Logical Reasoning: Problem Solving

Problem 1: Number Puzzle

Question: Find the pattern: 9, 6, 1 → 2; 7, 3 → 4. Solve for the missing number.

Solution: The pattern is to subtract the sum of the subsequent numbers from the first number.

• Example 1: 9 - (6 + 1) = 9 - 7 = 2

• Example 2: 7 - 3 = 4

Problem 2: Find the Odd One Out (Words)

Question: Identify the inconsistent word: Crisp, Brief, Short, Long.

Solution: This is based on synonyms and antonyms.

The words Crisp, Brief, and Short all describe something concise or of limited duration/length. Long is the opposite. Therefore, Long is the odd one out.

Problem 3: Figure Completion

Question: Select the option that completes the given visual pattern.

Solution: The pattern requires mirroring existing parts to complete the figure. The correct option will reflect the design elements symmetrically in the incomplete quadrant.

Problem 4: Sequence Analysis

Question: In a given sequence, how many even numbers are immediately followed by an odd number?

Solution: Scan the sequence and identify pairs fitting the (Even, Odd) condition.

Example pairs from a sample sequence: 4 followed by 5, 8 followed by 9, 2 followed by 7. Careful counting is essential as these types of questions are common and prone to error.

Problem 5: Find the Odd One Out (Numbers)

Question: Identify the inconsistent number from options like 1, 9, 20.

Solution: The pattern is based on identifying perfect squares.

20 is not a perfect square of any integer, while 1 and 9 are. Therefore, 20 is the odd one out. It's important to remember that 1 is a perfect square.

Problem 6: Logical Inequalities

Question: Determine which conclusions are true based on given statements:

• Conclusion 1: F > C

• Conclusion 2: U > T
  Solution: Trace the relationships between elements in the base statements. If the > (greater than) symbol is the dominant relationship in the path for both F to C and U to T, then both conclusions are true. Always solve the problem fully before selecting an answer, as option placement can be misleading.