Which of the following equations has roots that are both real and equal?

A. X^2 - 4X + 4 = 0
Posted in:  Quadratic Equations -  Algebra -  Mathematics

In the sequence 1, 3, 5, 7, 9, 11, how many times does the number 4 occur?

B. 0

What is a synonym for 'difficult'?

B. HARD
Posted in:  Synonyms -  Vocabulary -  English

A, B, C, D, and E are waiting in line. A is ahead of B but behind C. D is ahead of E but behind B. What is the correct order of people in line?

A. C, A, B, D, E

What letter should come next in the series: B, D, F, H, ?

A. J