book
Maths Puzzle
Numerical Ability
Given the quadratic equation: x^2 - 5x + 1 = 0.
A. What is the sum of the roots?
B. What is the product of the roots?
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book Other Question
The letters a, b, c, and d will be used to form passwords for the schools computer system. How many 4 letter passwords maybe formed if the letters can be used more than once in any passwrd?
(x)=8
I need to understand how to get the answer for this question
for a final.