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CDS Logical Reasoning — practice questions

51 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.

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Find the next number: 2, 6, 12, 20, 30, ?Find the next number: 1, 4, 9, 16, 25, ?Find the next: 3, 7, 15, 31, 63, ?Find the next: 1, 1, 2, 3, 5, 8, ?Find the missing: 5, 11, 23, 47, ?, 191Find the next: 8, 27, 64, 125, ?Find the next: 100, 50, 25, 12.5, ?Find the next: A, C, E, G, ?Find the missing: B, D, F, H, ?, LFind the next: AZ, BY, CX, DW, ?Find the next: ACE, BDF, CEG, ?Doctor : Hospital :: Teacher : ?Pen : Write :: Knife : ?Bird : Fly :: Fish : ?Hunger : Food :: Thirst : ?Light : Blind :: Sound : ?Botany : Plants :: Cardiology : ?3 : 27 :: 4 : ?5 : 24 :: 8 : ?7 : 56 :: 9 : ?Statements: All cats are mammals. All mammals are animals. Conclusion: All cats are animals.Statements: Some dogs are brown. All brown things are animals. Conclusion: Some dogs are animals.Statements: No teachers are lazy. Some teachers are intelligent. Conclusion: Some intelligent are not lazy.Statements: All birds can fly. Penguins are birds. Conclusion: Penguins can fly.Pointing to a photograph, Rohan said: 'She is my mother's only daughter's daughter.' How is the girl related tA is B's father. C is A's son. D is B's only sister. How is C related to D?In a family, P is M's son. N is P's sister. Q is M's mother. How is Q related to N?X is Y's brother. Z is Y's mother. W is Z's father. How is W related to X?If CAT = 3-1-20, then DOG = ?In a code language, ROSE is coded as SPTF (each letter shifted by +1). How is LILY coded?In a coded language, if HAPPY = IBQQZ, then how is SAD coded?If 'MOUSE' = 'LNTRD' in a code, what is 'KEY'?Ravi walks 5 km north, then 3 km east, then 5 km south. How far is he from the starting point?Anand walks 10 m east, then 5 m north, then 10 m west, then 5 m north. Final direction from start:A person facing north turns right by 90°, then left by 90°. He is now facing:Find the odd one out:Find the odd one out:Find the odd one out:Find the odd one out:In a class of 50 students, 30 play cricket and 25 play football. 10 play both. How many play neither?Among 100 students, 60 like math, 50 like science, 40 like both. How many like only math?Five friends A, B, C, D, E sit in a row. A is to the left of B, but right of C. D is right of B. E is leftmostIf 1, 2, 3 are adjacent faces of a cube and opposite face of 1 is 6, opposite of 2 is 5, what is opposite of 3In the series Z Y X W V U T S, what is the 5th letter from the right?If 'A' = 1, 'B' = 2, ... 'Z' = 26, then sum of letters in 'CAT':What day of the week was it on 15 August 1947? Statement (I): India became independent on 15 August 1947. StatIf 1st January 2024 was a Monday, what day was 1st March 2024 (2024 is a leap year)?Statements: (i) All students are hardworking. (ii) Rohan is not hardworking. Which conclusion is valid?All ducks swim. Donald is a duck. Therefore:A is twice as old as B. B is 3 years older than C. If C is 5, how old is A?Sum of 5 consecutive integers is 60. The largest is: