alleryFor two positive numbers, the arithmetic mean A and geometric mean G satisfy:
AA is less than G
BA is at least G
CG is at least A
DA equals G always
Answer & Solution
Correct answer: B. A is at least G
1. The difference A minus G is half a squared difference.
2. A square is never negative.
3. So A is greater than or equal to G.
_Source: syllabus Mathematics, Chapter 8, Sequences and Series._
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