Difficulty: Easy
Correct Answer: If both conclusions I and II follow
Explanation:
Introduction / Context:We combine equalities and inequalities to deduce new ones.
Given Data / Assumptions:
Concept / Approach:Use substitution and transitivity: if G ≥ Q and Q = Z, then G ≥ Z; if C ≥ G and G ≥ R (from G ≥ Q ≥ R), then C ≥ R.
Step-by-Step Solution: G ≥ Q and Q = Z ⇒ G ≥ Z (I true). Q ≥ R and G ≥ Q ⇒ G ≥ R; C ≥ G ⇒ C ≥ R (II true).
Verification / Alternative check:Pick numbers satisfying the premises (e.g., C=5, G=4, Q=3, Z=3, R=2). Both conclusions hold.
Why Other Options Are Wrong:Not “only I” or “only II”; both follow.
Common Pitfalls:Missing the intermediate step G ≥ R before concluding C ≥ R.
Final Answer:If both conclusions I and II follow
Discussion & Comments