Practice30Create account

Statements: All keys are locks. Some locks are doors. Conclusions: I. Some keys are doors.
II. Some doors are locks. Which conclusion(s) follow(s)?

Competition practiceSyllogism
  • AOnly I follows
  • BOnly II follows
  • CBoth I and II follow
  • DNeither follows

Step-by-Step Solution

'Some locks are doors' converts to 'some doors are locks' (II). The locks that are doors need not include any keys, so I does not follow.
Answer: B) Only 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: Some doctors are engineers. No engineer is a pilot. Conclusions: I. Some…Statements: All coins are metals. All metals are solids. Conclusions: I. All coins are…Statements: Some cups are plates. All plates are bowls. Conclusions: I. Some bowls are…Statements: No fish is a mammal. All whales are mammals. Conclusions: I. No whale is a…Statements: Some flowers are red. Some red things are cars. Conclusions: I. Some flowers…