SSC CGL 2019 PYQ — Question 9

SSC CGL Tier II Quant - 12/09/2019 • Quantitative Aptitude • Q9

If x + y + z = 2, xy + yz + xz = -11, and xyz = -12, then what is the value of  ?

Show answer & explanation

Correct answer: A

Explanation

The correct answer is option 1 ie 6.

x + y + z = 2

xy + yz + xz = -11

xyz = -12

x = 4, y = -3, z = 1

= √36 = 6