Four friends, A, B, C, and D, went to a party at different times. A arrived before C but after B. D arrived after C. What is the correct order of their arrival?

A. B, A, C, D

In the series A, B, C, D, E, F, G, how many letters come before E?

B. 4

Identify the missing letter in the series: Z, X, V, T, ?

B. S

What is the sum of the roots of the quadratic equation x² - 5x + 6 = 0?

A. 5
Posted in:  Quadratic Equations -  Algebra -  Mathematics

Identify the missing character in the series 1, 4, 9, ?, 25, 36.

A. 16