OSSSC (Odisha Subordinate Staff Selection Commission) conducts recruitment exams for various posts including Revenue Inspector (RI), Assistant Revenue Inspector (ARI), Amin, Statistical Field Surveyor (SFS), and ICDS Supervisor. One of the key sections in these exams is Reasoning Ability, which assesses candidates’ logical and analytical thinking skills. To help aspirants prepare effectively, here are the top 30 Reasoning MCQs for OSSSC recruitment exams.
Top 30 Reasoning MCQs for OSSSC RI,ARI, Amin, SFS, ICDS Supervisor
- If A is the brother of B, B is the sister of C, and C is the father of D, D is the brother of E, how is D related to A?
(a) Son
(b) Daughter
(c) Nephew
(d) Niece
Ans: (c) Nephew
Solution: A is the uncle of D as C is D’s father, and A is C’s brother. - In a certain code language, ‘BEHAVIOR’ is written as ‘CGICWKPWS’. How is ‘CULTURE’ written in that code?
(a) DWMVWSF
(b) DVNWVTF
(c) DWMVSZF
(d) DWMVVTF
Ans: (d) DWMVVTF
Solution: Each letter is shifted by one position forward in the alphabet. - If ‘TIGER’ is coded as ‘SFHJU’, how would ‘MAJOR’ be coded in the same way?
(a) OPKBN
(b) SPKBN
(c) SPKBM
(d) OJNCP
Ans: (b) SPKBN
Solution: Reverse the order of the first and last two letters. - Pointing to a photograph, a man said, “She is the only daughter of my mother’s father.” How is the lady in the photograph related to the man?
(a) Sister
(b) Aunt
(c) Niece
(d) Cousin
Ans: (a) Sister
Solution: The lady is the man’s sister as she is the daughter of his grandfather. - Choose the odd one out:
(a) Mango
(b) Apple
(c) Banana
(d) Rose
Ans: (d) Rose
Solution: Rose is a flower; the others are fruits. - In a certain code, ‘ROAD’ is written as ‘URDG’. How will ‘SLOPE’ be written in that code?
(a) VORSH
(b) VNRUJ
(c) UNRSH
(d) VMRSH
Ans: (a) VORSH
Solution: The letters are shifted by 3 positions forward in the alphabet. - Which word does not belong to the group?
(a) Teacher
(b) Doctor
(c) Engineer
(d) Book
Ans: (d) Book
Solution: All others are professions; Book is an object. - If ‘WATER’ is coded as ‘YCVGT’, then ‘FIRE’ will be coded as?
(a) HKVG
(b) HJTG
(c) HKUF
(d) HKTG
Ans: (d) HKTG
Solution: Each letter is shifted by 2 positions forward in the alphabet. - Find the odd one out:
(a) 16-64
(b) 12-36
(c) 9-27
(d) 7-21
Ans: (a) 16-64
Solution: The pattern is x =X*3, except for option (a), which follows x*
4. - A cube is painted on all sides and then cut into smaller cubes of equal size. If there are 27 smaller cubes, how many of these cubes have paint on exactly two faces?
(a) 4
(b) 8
(c) 12
(d) 6
Ans: (c) 12
Solution: Only the edge cubes have paint on exactly two faces. In a 3x3x3 cube, there are 12 edge cubes. - A family consists of six members A, B, C, D, E, and F. A is the father of B, but B is not his son. C is the sister of B. D is the son of A. E is the wife of A. F is the son of E. Who is B?
(a) Daughter
(b) Son
(c) Cousin
(d) Uncle
Ans: (a) Daughter
Solution: Since B is not A’s son, B must be his daughter. - If it was a Thursday on 1st January 2015, what was the day on 31st December 2014?
(a) Tuesday
(b) Wednesday
(c) Thursday
(d) Monday
Ans: (b) Wednesday
Solution: 31st December 2014 was one day before 1st January 2015, hence Wednesday. - In a row of boys, Ravi is 10th from the left and Suresh is 7th from the right. If they interchange their positions, Ravi becomes 15th from the left. How many boys are there in the row?
(a) 18
(b) 20
(c) 22
(d) 24
Ans: (b) 20
Solution: The total number of boys = Ravi’s new position + Suresh’s old position – 1 = 15 + 7 – 1 = 21 – 1 = 20. - A man travels 6 km north, then turns left and travels 4 km, then turns left and travels 6 km, and finally turns left and travels 2 km. How far is he from the starting point?
(a) 2 km
(b) 4 km
(c) 6 km
(d) 8 km
Ans: (a) 2 km
Solution: The final position is 2 km south of the starting point. - What is the logical and meaningful order for the following words?
1.Bronze
2.Gold
3.Silver
4.Platinum
5.Iron
(a) 3, 1, 5, 2, 4
(b) 5, 1, 3, 2, 4
(c) 2, 1, 5, 3, 4
(d) 5, 4, 3, 2, 1
Answer: (b) 5, 1, 3, 2, 4
Solution:
Iron is the most common and least valuable metal in the list.
Bronze is an alloy of copper and tin, often considered more valuable than iron.
Silver is a precious metal with more value than bronze.
Gold is more valuable than silver.
Platinum is the most valuable and rarest metal in the list.
The correct logical order based on increasing value is Iron → Bronze → Silver → Gold → Platinum. - Arrange the given words in a logical and meaningful order:
1.Book
2.Seller
3.Idea
4.Feedback
5.Reader
(a) 4, 1, 2, 3, 6, 5
(b) 4, 1, 2, 6, 3, 5
(c) 4, 1, 3, 6, 5, 2
(d) 4, 1, 2, 6, 5, 3
Answer: (d) 4, 1, 2, 6, 5, 3
Solution:
Idea is the starting point.
Book is the result of the idea being written down.
Seller sells the book to the public.
Reader reads the book.
Feedback is provided by the reader.
The correct sequence is Idea → Book → Seller → Reader → Feedback. - Choose the odd one out: Cherry, Apple, Banana, Grape
(a) Cherry
(b) Apple
(c) Banana
(d) Grape
Answer: (c) Banana
Solution: Banana is the only fruit that is technically a berry, while others are not. - If a clock shows the time as 8:00 PM, what is the angle between the hour and minute hands?
(a) 240 degrees
(b) 120 degrees
(c) 180 degrees
(d) 90 degrees
Answer: (a) 240 degrees
Solution: The angle between the hour and minute hands = |(30*hour – (11/2)minutes)| = |(308 – (11/2)*0)| = 240 degrees. - A man walks 5 km towards the north and then turns to the right. After walking 3 km, he turns to the right and walks 5 km. Then, he turns to the left and walks 5 km. How far is he from the starting point?
(a) 5 km
(b) 10 km
(c) 13 km
(d) 8 km
Ans: (d) 8 km
Solution: The man is 8 km away from the starting point diagonally. - Rahul walks 30 meters towards the north, then turns right and walks 40 meters. He then turns right and walks 20 meters, and finally turns right and walks 40 meters. How far is he from the starting point?
(a) 10 meters
(b) 20 meters
(c) 30 meters
(d) 40 meters
Ans: (a) 10 meters
Solution: Rahul is 10 meters north of the starting point. - Statements: All dogs are cats. Some cats are rats. Conclusions: (i) Some dogs are rats. (ii) No dog is a rat.
(a) Only conclusion I follows
(b) Only conclusion II follows
(c) Either conclusion I or II follows
(d) Neither conclusion I nor II follows
Ans: (c) Either conclusion I or II follows
Solution: Both conclusions are possible but not definite. - Statements: Some birds are animals. All animals are insects. Conclusions: (i) Some birds are insects. (ii) No bird is an insect.
(a) Only conclusion I follows
(b) Only conclusion II follows
(c) Either conclusion I or II follows
(d) Neither conclusion I nor II follows
Ans: (a) Only conclusion I follows
Solution: Since all animals are insects, some birds being animals implies that some birds are insects. - How many sisters does John have?
Statements:
(i) John’s father has three children.
(ii) John’s brother has two sisters.
(a) Statement I alone is sufficient
(b) Statement II alone is sufficient
(c) Both statements together are sufficient
(d) Both statements together are not sufficient
Ans: (b) Statement II alone is sufficient
Solution: From statement II, we know John has 2 sisters. - Is X the grandmother of Y?
Statements:
(i) Y is the son of Z.
(ii) Z is the daughter of X.
(a) Statement I alone is sufficient
(b) Statement II alone is sufficient
(c) Both statements together are sufficient
(d) Both statements together are not sufficient
Ans: (c) Both statements together are sufficient
Solution: Combining both statements, X is the grandmother of Y. - Select the one which is different from the other three responses.
(a) AEIO
(b) BFJN
(c) CGKO
(d) DHLP
Ans. (a);
Sol. In every other option the pattern is +4, +4, +4. - Select the one which is different from the other three responses.
(a) (23, 14)
(b) (36, 27)
(c) (29, 82)
(d) (18, 45)
Ans. (c);
Sol. In all other options the sum of the digits of first number is equal to the sum of digits of second number. - Select the one which is different from the other three responses.
(a) 5, 3, 2, 9
(b) 2, 4, 3, 9
(c) 1, 4, 3, 8
(d) 3, 2, 3, 8
Ans. (a);
Sol. Except ‘a’, in all other option the sum of first of three numbers is equal to fourth number. - Select the related word/letters/number from the given alternatives.
Foot : Man : : Hoof : ?
(a) Leg
(b) Dog
(c) Horse
(d) Shoe
Ans.(c)
Sol. Foot is the part of Man & hoof is the body part of horse. - If BLACKSMITH is coded as CNBELUNKUJ, then CHILDREN will be coded as ?
(a) DIJMESFO
(b) DJJNETFP
(c) DJINETEP
(d) DJJNETEP
Ans.(b)
Sol. The difference between letters are +1, +2, +1, +2, …..
so, CHILDREN → DJJNETFP - In the following question, select the odd letter/letters from the given alternatives.
(a) KQW
(b) RXD
(c) BHN
(d) AGL
Ans.(d)
Sol. +6 series except (AGL)
