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

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

If the roots of the quadratic equation ax^2 + bx + c = 0 are 3 and -2, what is the value of b if a = 1 and c = -6?

B. -5
Posted in:  Basic Operations & Factorization -  Algebra -  Mathematics

From the following items: X, Y, Z, A, and B, the selection rules are: 1) X and Y cannot be selected together. 2) If A is selected, then B must also be selected. 3) Z can be selected only if Y is not selected. Which of the following selections is valid?

C. X, Z
Posted in:  Selection Based On Given Conditions -  Puzzle Test -  Verbal Reasoning

Among five students, X is taller than Y but shorter than Z. W is shorter than X but taller than Y. Who is the tallest?

C. Z
Posted in:  Comparison Type Questions -  Puzzle Test -  Verbal Reasoning

In a coding system, 'RAT' is coded as '918' and 'BAT' is coded as '218'. What is the code for 'A'?

B. 2
Posted in:  Mixed Letter Coding -  Coding - Decoding -  Verbal Reasoning