Practice30Create account

Statements: All keys are locks. Some locks are doors. Conclusions: I. Some keys are doors.
II. Some keys are not doors.

Competition practiceSyllogism
  • ANeither conclusion I nor II follows
  • BEither conclusion I or II follows
  • CBoth conclusions I and II follow
  • DOnly conclusion I follows

Step-by-Step Solution

Neither 'Some keys are doors' nor 'Some keys are not doors' can be established definitely, but together they cover every case and are a complementary I-O pair, so either I or II follows.
Answer: B) Either conclusion I or II follows

Master this topic in 30 minutes a day.

Don't just memorise the answer — build a daily practice habit.

Practice 5 Similar Questions Free →

All Syllogism practice questions

More Syllogism practice

Statements: No cat is a dog. All dogs are pets. Conclusions: I. Some pets are not cats.…Statements: All books are pens. No pen is a pencil. Conclusions: I. No book is a pencil.…Statements: Some tables are chairs. No chair is metal. Conclusions: I. Some tables are…Statements: All fruits are sweet. Some sweets are red. Conclusions: I. Some fruits are…Statements: No student is lazy. Some lazy people are poor. Conclusions: I. Some poor…