If the quadratic equation x² + 6x + 9 = 0 is solved, what is the product of its roots?

A. 9
Posted in:  Quadratic Equations -  Algebra -  Mathematics

In a group of five friends: Alice, Bob, Charlie, David, and Eva, Alice is taller than Bob but shorter than Charlie. David is shorter than Eva but taller than Bob. Who is the tallest among them?

C. CHARLIE

Choose a word similar to the group: Calm, Peaceful, Tranquil.

B. SERENE

What does the phrasal verb 'run into' imply?

B. TO MEET SOMEONE UNEXPECTEDLY
Posted in:  Phrasal verbs -  Grammer -  English

In the sequence: A1, B2, C3, ?, E5, what should replace the question mark?

A. D4