Logical reasoning is a crucial component in the OSSC LTR (Odisha Staff Selection Commission – Lecturer and Teacher Recruitment) exam, testing a candidate’s ability to solve problems using analytical and critical thinking skills. To excel in this section, practice is essential. Here are the top 20 logical reasoning multiple-choice questions (MCQs) designed to help you prepare for this exam.
Top 20 Logical Reasoning MCQs For OSSC LTR Teachers
- Question: If the word ‘GREEN’ is coded as ‘FQDDM’, how will ‘YELLOW’ be coded?A) XMFKKC
B) XMEDPC
C) XMFDPC
D) XMFDQC
Answer: B) XMEDPC
Explanation: Each letter of the word ‘GREEN’ is replaced by the letter that appears two positions ahead in the English alphabet. Similarly, ‘YELLOW’ will be coded as ‘XMEDPC’. - Question: If 6 × 2 = 14, 9 × 5 = 47, and 12 × 7 = 86, then what is 10 × 3?A) 30
B) 32
C) 34
D) 16
Answer: B) 32
Explanation: The pattern is adding 2 to the result of multiplying the two numbers. So, 10 × 3 = 30 + 2 = 32. - Question: Arrange the following words in a meaningful sequence:1.Ship
2. Sea
3. Ocean
4. Boat
A) 4, 2, 3, 1
B) 3, 1, 2, 4
C) 1, 2, 3, 4
D) 2, 1, 3, 4
Answer: B) 3, 1, 2, 4
Explanation: Ocean (large water body) → Ship (vehicle used in sea) → Sea (smaller water body) → Boat(vehicle used in sea/River). - Question: If ‘APPLE’ is written as ‘5’ and ‘ORANGE’ is written as ‘6’, then what is ‘POTATOES’?A) 5
B) 6
C) 7
D) 8
Answer: D) 8
Explanation: The number corresponds to the number of letters in the word. So, ‘GRAPE’ has 5 letters, hence it’s ‘8’. - Question: If ‘DOG’ is coded as ’23’, then how is ‘CAT’ coded?A) 20
B) 21
C) 22
D) 24
Answer: B) 21
Explanation: The number represents the position of the letters in the English alphabet (D = 4, O = 15, G = 7, so 4 + 15 + 7 = 26 – 3 = 23). Similarly, C = 3, A = 1, T = 20, so 3 + 1 + 20 = 24-3=21. - Question: If all roses are flowers and some flowers are red, then which of the following statements is true?A) All roses are red.
B) Some roses are red.
C) All red things are roses.
D) Some red things are roses.
Answer: B) Some roses are red.
Explanation: From the given information, it’s clear that some flowers are red, so it’s true that some roses (which are flowers) are red. - Question: If ‘ABC’ is written as ‘ZYX’, how will ‘PQR’ be written?A) KLJ
B) QPS
C) JKL
D) JKL
Answer: C) JKL
Explanation: The letters are written in reverse order. - Question: If 8 × 4 =40, 6 × 3 = 24, and 7 × 5 = 42, then what is 9 × 6?A) 56
B) 60
C) 54
D) 64
Answer: B) 60
Explanation: The pattern is multiplying the two numbers and then adding the first number to the result. So, 9 × 6 = 54 + 6 = 60. - Question: If ‘A’ is coded as 1, ‘B’ as 2, and so on, then what is the code for ‘MANGO’?A) 44
B) 47
C) 49
D) 57
Answer: C) 49
Explanation: M = 13, A = 1, N = 14, G = 7, O = 15. So, the code for ‘MANGO’ is 13 + 1 + 14 + 7 + 15 = 49. - Question: If 5 – 3 = 16 and 8 – 4 = 48, then 7 – 2 = ?A) 30
B) 45
C) 50
D) 60
Answer: B) 45
Explanation: The pattern is (a – b) × (a + b). So, 7 – 2 = (7 – 2) × (7 + 2) = 5 × 9 = 45, but it seems that there is a typographical error in the provided question. - Question: If all cats can climb trees, and Mittens is a cat, what can you infer?A) Mittens can climb trees.
B) Mittens cannot climb trees.
C) Some cats can climb trees.
D) None of the above.
Answer: A) Mittens can climb trees.Explanation: According to the given statement, all cats can climb trees. Therefore, if Mittens is a cat, it follows that Mittens can climb trees.
- Question: Which word does not belong in the following list: Apple, Orange, Banana, Carrot?A) Apple
B) Orange
C) Banana
D) Carrot
Answer: D) CarrotExplanation: The first three items are fruits, while a carrot is a vegetable.
- Question: If ZEBRA is written as YDCAQ, how is TIGER written?A) SHFDQ
B) SHFDP
C) SHEDQ
D) SHEDP
Answer: A) SHFDQExplanation: Each letter in “ZEBRA” is replaced with the letter preceding it. Therefore, TIGER becomes SHFDQ.
- Question: If 5 + 3 = 40, 7 + 2 = 63, 6 + 5 = 66, then 8 + 4 = ?A) 84
B) 44
C) 96
D) 32
Answer: C) 96Explanation: Each equation follows this pattern: (a + b) * (a). So, 8 + 4 * 8 = 68.
- Question: In a group of 40 people, 25 can speak Spanish, 20 can speak French, and 15 can speak both languages. How many people in the group cannot speak either language?A) 5
B) 10
C) 15
D) 20
Answer: B) 10Explanation: Using the principle of inclusion-exclusion, total = Spanish + French – (Both). So, 25 + 20 – 15 = 30. Therefore, 40 – 30 = 10 cannot speak either language.
- Question: If all cats have tails, and Fluffy is a cat, what can you infer?A) Fluffy has a tail.
B) Fluffy does not have a tail.
C) Some cats have tails.
D) None of the above.
Answer: A) Fluffy has a tail.Explanation: According to the given statement, all cats have tails. Therefore, if Fluffy is a cat, it follows that Fluffy has a tail.
- Question: If circle is to sphere, then square is to?A) Cube
B) Rectangle
C) Polygon
D) Pyramid
Answer: A) CubeExplanation: A circle is a 2D shape, and a sphere is its 3D counterpart. Similarly, a square is a 2D shape, and a cube is its 3D counterpart.
- Question: If RED is coded as 672, then how would you code BLUE?A) 425
B) 952
C) 410
D) 293
Answer: C) 410Explanation: Each letter is assigned a number (A=1, B=2, etc.) and then addition of assigned number and its position in the word (R=18, E=5, D=4). So, RED = (181)+(52)+(43) = 276. Similarly, BLUE = (21)+(122)+(213)+(54) = 410.
- Question: If 8 + 8 = 7, 6 + 6 = 3, 7 + 7 = 5, then 5 + 5 = ?A) 1
B) 10
C) 7
D) 6
Answer: A) 1Explanation: If you look at each equation, the sum of the digits is the answer. So, 5 + 5 = 10, and the sum of 1 + 0 is 1 digit, which is 4.
- Question: If dog is to kennel, then bird is to?A) Nest
B) Coop
C) Cage
D) Stable
Answer: A) NestExplanation: A dog stays in a kennel, and a bird stays in a nest.
