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📐 Mathematics  ·  Probability (Class 11)  ·  JEE

If A ⊆ B, then which relation must hold?

Answer: P(A) ≤ P(B).

  • A P(A) = P(B) always
  • B P(A) + P(B) = 1
  • C P(A) ≤ P(B)
  • D P(A) ≥ P(B)

Correct answer: C. P(A) ≤ P(B)

Explanation: Every outcome in A also lies in B, so B carries at least as much probability - monotonicity of probability.

Concept context

Random experiments, sample space, events, and the axiomatic approach to probability

Read the full Probability (Class 11) notes →