Mental Ability-Deductive Logic Questions and Answers

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Q11
All athletes are fit. Some fit people are vegetarians. Therefore:
  • A All athletes are vegetarians
  • B No athletes are vegetarians
  • C Some athletes are vegetarians
  • D None of the above can be concluded
Answer: Option D
Explanation: Logical deduction: This doesn't guarantee any direct relationship between athletes and vegetarians.
Q12
If all engineers are logical and no logical people make rash decisions, then:
  • A Some engineers make rash decisions
  • B No engineers make rash decisions
  • C All logical people are engineers
  • D Some rash decision makers are engineers
Answer: Option B
Explanation: Syllogism: If all A are B and no B do C, then no A do C.
Q13
Some musicians play piano. All who play piano have good hand coordination. Therefore:
  • A All musicians have good hand coordination
  • B No musicians have good hand coordination
  • C Some musicians have good hand coordination
  • D Only piano players have good hand coordination
Answer: Option C
Explanation: Deductive reasoning: If some A do B and all who do B have C, then some A have C.
Q14
No fish can fly. All birds can fly. Therefore:
  • A Some fish are birds
  • B No fish are birds
  • C All birds are fish
  • D Some birds are fish
Answer: Option B
Explanation: Logical deduction: If no A can B and all C can B, then no A are C.
Q15
If all doctors save lives and some life-savers are volunteers, which is true?
  • A All doctors are volunteers
  • B No doctors are volunteers
  • C Some doctors are volunteers
  • D None of the above can be concluded
Answer: Option D
Explanation: Deductive logic: This doesn't guarantee any direct relationship between doctors and volunteers.
Q16
All squares have four sides. Some four-sided shapes are rectangles. Therefore:
  • A All squares are rectangles
  • B No squares are rectangles
  • C Some squares are rectangles
  • D None of the above can be concluded
Answer: Option C
Explanation: Logical reasoning: This doesn't guarantee any direct relationship between squares and rectangles.
Q17
If no reptiles are warm-blooded and all snakes are reptiles, then:
  • A Some snakes are warm-blooded
  • B No snakes are warm-blooded
  • C All warm-blooded animals are snakes
  • D Some warm-blooded animals are reptiles
Answer: Option B
Explanation: Syllogism: If no A are B and all C are A, then no C are B.
Q18
Some artists are painters. All painters are creative. Therefore:
  • A All artists are creative
  • B No artists are creative
  • C Some artists are creative
  • D All creative people are artists
Answer: Option C
Explanation: Deductive logic: If some A are B and all B are C, then some A are C.
Q19
All students in this class passed. Some who passed got scholarships. Therefore:
  • A All students got scholarships
  • B No students got scholarships
  • C Some students got scholarships
  • D Only students in this class got scholarships
Answer: Option C
Explanation: Logical deduction: If all A passed and some who passed got B, then some A got B.
Q20
If no trees can walk and all humans can walk, then:
  • A Some trees are humans
  • B No trees are humans
  • C All humans are trees
  • D Some humans are trees
Answer: Option B
Explanation: Syllogism: If no A can B and all C can B, then no A are C.

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